Question

2. Kirsten has $500 in her savings account. She is able to save $50 each month. The function

S(m) = 50m + 500 represents the amount of money in her savings account S as a function of time in months m.
2.a. Find S(2). Explain what this represents in this problem.
2.b. Find m such that S(m) = 800. Explain what this represents in this problem.

Answer 1

2a. S(2)=50 * 2 + 500 making your answer 600$. This means that after 2 months Kristen will have 600 dollars.

2b. 800= 50m+500. Subtract 500 from 800, which gets you to 300=50m. Then divide 300 by 50, which gets to 6, so the answer is 6. This means that after 6 months of saving, Kristen will have 800 dollars