Polynomials

Multiply ( 4x2 – 3)(x + 8)

(4*2-3)(x+8)

(8-3)(x+8)

8(x+8)-3(x+8)

8x+64-3x-24

8x-3x+64-24

5x+40

Hi there! So, the simple interest is 7.5% annually. Let’s multiply by initial amount by the interest rate. 5,000 * 7.5% is 375. You earn $375 in interest annually. The difference of 6,500 and 5,000 is 1,500. Let’s divide by 375 to see how many times it goes into 1,500. 1,500/375 is 4. It will take 4 years for the balance of the account to be $6,500.