diff --git a/src/brackets/index.js b/src/brackets/index.js
index 96b6766..729f90e 100644
--- a/src/brackets/index.js
+++ b/src/brackets/index.js
@@ -4,6 +4,28 @@
  * @param {string} str The string of brackets.
  * @returns {"valid" | "invalid"} Whether or not the string is valid.
  */
-function isValid(str) {}
+function isValid(str) {
+        let arrBracket = [];
+    
+        for (let i in str) {
+            if (str[i] == '(' || str[i] == '[' || str[i] == '{') {
+                arrBracket.push(str[i]);
+            } else {
+                let braInd = arrBracket.length - 1;
+    
+                if (str[i] == ')' && arrBracket[braInd] == '(') {
+                    arrBracket.pop();
+                } else if (str[i] == ']' && arrBracket[braInd] == '[') {
+                    arrBracket.pop();
+                } else if (str[i] == '}' && arrBracket[braInd] == '{') {
+                    arrBracket.pop();
+                } else {
+                    return 'invalid';
+                }
+            } 
+        }
+    
+        return arrBracket.length === 0 ? 'valid' : 'invalid';
+    }
 
 module.exports = isValid;
diff --git a/src/brackets/test.js b/src/brackets/test.js
index 3e7e660..47c05f0 100644
--- a/src/brackets/test.js
+++ b/src/brackets/test.js
@@ -1,4 +1,4 @@
-const isValid = require("./");
+const isValid = require(".");
 
 describe("Brackets Suite", () => {
   test("Single Character - valid inputs", () => {
diff --git a/src/roman-numerals/index.js b/src/roman-numerals/index.js
index 38afb19..a164a82 100644
--- a/src/roman-numerals/index.js
+++ b/src/roman-numerals/index.js
@@ -4,6 +4,23 @@
  * @param {string} roman The all-caps Roman numeral between 1 and 3999 (inclusive).
  * @returns {number} The decimal equivalent.
  */
-function romanToDecimal(roman) {}
+function romanToDecimal(roman) {
+        const romanNum = {'I': 1, 'V': 5, 'X': 10, 'L': 50, 'C': 100, 'D': 500, 'M': 1000};
+    
+        let result = 0;
+    
+        for(let i = 0; i < roman.length; i++){
+            let curValue = romanNum[roman[i]];
+            let nxtValue = romanNum[roman[i + 1]];
+            
+            if (nxtValue && nxtValue > curValue){
+                result += nxtValue - curValue;
+                    i++;
+            } else {
+                result += curValue;
+            } 
+        } 
+        return result;
+    }
 
 module.exports = romanToDecimal;
diff --git a/src/transpose/index.js b/src/transpose/index.js
index adec201..789f90d 100644
--- a/src/transpose/index.js
+++ b/src/transpose/index.js
@@ -4,6 +4,15 @@
  * @param {number[]} array The array to transpose
  * @returns {number[]} The transposed array
  */
-function transpose(array) {}
-
+function transpose(array) {
+    let transposedArr = [];
+    for (let i = 0; i < array[0].length; i++) {
+        let arrChild = [];
+        for (let j = 0; j < array.length; j++) {
+            arrChild.push(array[j][i]);
+        }
+        transposedArr.push(arrChild);
+    }
+    return(transposedArr);
+}
 module.exports = transpose;