MissChiefGrey · MissChiefGrey · Apr 24, 2020 · Apr 29, 2020
diff --git a/README.md b/README.md
@@ -44,10 +44,10 @@ Check out the resources below for more of a step-by-step walk-through of this ma
 
 Using VSCode and Command Line:
 
-1. Fork repo and add TL as collaborator on Github.
-2. Clone your fork (not Lambda's repo by mistake!).
-3. `cd` into your newly cloned repository.
-4. Create a new branch by typing `git checkout -b <firstName-lastName>`.
+1.{X} Fork repo and add TL as collaborator on Github.
+2.{X} Clone your fork (not Lambda's repo by mistake!).
+3.{X} `cd` into your newly cloned repository.
+4.{X} Create a new branch by typing `git checkout -b <firstName-lastName>`.
 
 ### Task 2: Complete MVP Requirements
 
@@ -62,15 +62,16 @@ After you have completed the requirements, try any of the following challenges.
 - [ ] Add  `Property Tax`, `Homeowner's insurance` and `HOA fees` as parameters in your function to calculate total monthly spending on housing
 - [ ] Build a calculator function that accepts `monthly payment` and `interest rate` and returns the maximum loan that a person could afford
 - [ ] Explore using `window.prompt()` to allow a user to input parameters in the browser
+sign = window.prompt(INPUT YOUR OWN DATA);
 - [ ] Refactor your `variableInterestRate()` function to accept an array of interest rates (make sure to copy and paste as to not lose your work!)
 
 ## Submission format
 
 Follow these steps for completing your project.
 
-1. [ ] Submit a pull request to merge `<firstName-lastName>` branch into master. **Please don't merge your own pull request**
-2. [ ] Add your TL as a reviewer on the pull-request
-3. [ ] Your TL will count the project as complete by merging the branch back into master
+1. [X] Submit a pull request to merge `<firstName-lastName>` branch into master. **Please don't merge your own pull request**
+2. [X] Add your TL as a reviewer on the pull-request
+3. [X] Your TL will count the project as complete by merging the branch back into master
 
 ## Resources
 

diff --git a/elizabeth-knoll.txt b/elizabeth-knoll.txt
diff --git a/index.js b/index.js
@@ -3,7 +3,10 @@
 // 🏡 Task 1: Variables
 /* Create variables for principal, interest rate, and years. Assign them the values 200000, 0.05, and 30 respectively. Create another value called name and give it the value of your own name.
 */
-
+let principal = 200000;
+let interestRate = 0.05;
+let years= 30;
+let name = 'Elizabeth';
 
 
 
@@ -16,7 +19,8 @@ Create a variable called `monthlyInterestRate` and give it the value of interest
 Create another variable called `periods` and give it the value of years*12.
 */
 
-
+let monthlyInterestRate = interestRate / 12;
+let periods = years * 12;
 
 
 // 🏡 Task 2: Harder Math
@@ -28,7 +32,10 @@ Hint #2: you'll need to use the `math` object for parts of this calculation!
 
 When your math is correct, monthlyRate will equal 1073.64
 */
-
+// M = P [ I ( 1 + I )^N ] / [ ( 1 + I )^N – 1 ]
+let monthlyRate = principal * ((monthlyInterestRate * Math.pow((1 + monthlyInterestRate), periods)) / (Math.pow((1 + monthlyInterestRate), periods) - 1))
+monthlyRate = Math.round(monthlyRate * 100) / 100
+console.log("Task2 monthlyRate:", monthlyRate);
 
 
 
@@ -37,9 +44,15 @@ When your math is correct, monthlyRate will equal 1073.64
 
 If your name is `Oscar` mortgageCalculator() should return "Oscar, your monthly rate is 1073.64"
 */
+function mortgageCalculator3() {
+    let monthlyRate = principal * ((monthlyInterestRate * Math.pow((1 + monthlyInterestRate), periods)) / (Math.pow((1 + monthlyInterestRate), periods) - 1))
+    monthlyRate = Math.round(monthlyRate * 100) / 100
+    let results = `${name}, your monthly rate is ${monthlyRate}`;
+    return results
+}
 
 
-
+console.log("Task 3", mortgageCalculator3())
 
 
 // 🏡 Task 4: Arguments and Parameters
@@ -48,7 +61,15 @@ If your name is `Oscar` mortgageCalculator() should return "Oscar, your monthly
 For example,
 mortgageCalculator(2000000, 0.05, 30); <-- should return 1,073.64
 */
-
+function mortgageCalculator4(P, I, N) {
+    let monthlyInterestRate = I / 12;
+    let periods = N * 12;
+    let monthlyRate = P * ((monthlyInterestRate * Math.pow((1 + monthlyInterestRate), periods)) / (Math.pow((1 + monthlyInterestRate), periods) - 1))
+    monthlyRate = Math.round(monthlyRate * 100) / 100
+    let results = name + ", your monthly rate is " + monthlyRate;
+    return results
+}
+console.log("Task 4", mortgageCalculator4(200000, 0.05, 30))
 
 
 
@@ -59,6 +80,21 @@ mortgageCalculator(2000000, 0.05, 30); <-- should return 1,073.64
 Then, add control flow within your function such that IF creditScore is above 740, interest rate drops by 0.5%, if credit score is below 660, interest rate increases by 0.5% and if credit score is anywhere between 660 and 740 interest rate doesn't change.
 */
 
+function mortgageCalculator5(P, I, N, creditScore) {
+    if (creditScore > 740) {
+        var I = (I - 0.005);
+    } else if (creditScore < 660) {
+        var I = (I + 0.005);
+    } else {
+        var I = I;
+    }
+    let monthlyInterestRate = I / 12;
+    let periods = N * 12;
+    let monthlyRate = P * ((monthlyInterestRate * Math.pow((1 + monthlyInterestRate), periods)) / (Math.pow((1 + monthlyInterestRate), periods) - 1))
+    return monthlyRate = Math.round(monthlyRate * 100) / 100
+    // let creditScore = Math.random() * (800 - 0 + 1) + 0;
+}
+console.log("Task 5", mortgageCalculator5(200000, 0.05, 30, 550))
 
 
 
@@ -78,6 +114,19 @@ For example, variableInterestRate(200000, 0.04, 30) should console.log:
 "{Name}, with an interest rate of 0.06, your monthly rate is $1199"
 */
 
+function variableInterestRate(P, I, N) {
+    I -= 0.02;
+    for (x = I; x < 9; x++) {
+        let monthlyInterestRate = I / 12;
+        let periods = N * 12;
+        let monthlyRate = P * ((monthlyInterestRate * Math.pow((1 + monthlyInterestRate), periods)) / (Math.pow((1 + monthlyInterestRate), periods) - 1))
+        monthlyRate = Math.round(monthlyRate * 100) / 100
+        monthlyRate = monthlyRate.toFixed(2);
+        console.log(`${name}, with an interest of ${I.toFixed(2)}, your monthly rate is, $${monthlyRate}`)
+        I = I += 0.005;
+    }
+}
+variableInterestRate(200000, 0.04, 30) 
 
 
 
@@ -92,6 +141,6 @@ For example, variableInterestRate(200000, 0.04, 30) should console.log:
 
 
 /* 🏡 Explore using `window.prompt()` to allow a user to input parameters in the browser */
-
+sign = window.prompt("INPUT YOUR OWN DATA");
 
 /* 🏡  Refactor your `variableInterestRate()` function to accept an array of interest rates (make sure to copy and paste as to not lose your work!) */