Question 3 • CMS 2026-2027 NC Math 1 CREDIT RECOVERY
Mario invests $1,500 in a savings account that earns 2% interest a year. He also plans to set aside $50 cash a month. x is equal to number of years Savings account: f of x is equal to 1500 times 1 point 0 2 to the x th power Cash savings: g of x is equal to 50 times 12 x Which function represents the total amount Mario will save over x years?
Answer
A
1500 times 1 point 0 2 to the x th power plus 600 x
B
2100 times 1 point 0 2 to the x th power
C
2100 x
D
500 times 1 point 0 2 to the x th power minus 600 x
Explanation
The savings account balance after x years is 1500(1.02)^x. His cash savings add up to $50 × 12 = $600 per year, or 600x dollars over x years. Adding the two amounts gives 1500(1.02)^x + 600x, which is choice A.
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