function depositProfit(deposit, rate, threshold) {
    // Isolated t in the compound interest equation
    // I'm assuming this is compounded annually, so n = 1
    // Plugged in the variables for A, P, and r
    return Math.ceil((Math.log(threshold/deposit))/(Math.log(1+(rate/100))));
}



/**
* Test Suite 
*/
describe('depositProfit()', () => {
    it('returns number of years it will take to hit threshold based off of deposit & rate', () => {
        // arrange
        const deposit = 100;
        const rate = 20;
        const threshold = 170;
        
        // act
        const result = depositProfit(deposit, rate, threshold)

        // log
        console.log("result: ", result);
        
        // assert
        expect(result).toBe(3);
    });
});