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Writing Equations

Question 8 • NC-Foundations of Math 1 (Fall) [1st 9 Weeks]

Maribel was working at the fruit stand and had to find how much change to give a customer. The customer bought 11 oranges at $0.65 each and paid with a $10 bill. Use c to represent the amount of change and choose the correct equation.

Answer
A
11(0.65) + c = 10
B
11(0.65) = 10 + c
C
-10 + c = 11(0.65)
D
10(0.65) + c = 11

Explanation

The oranges cost 11 × $0.65 = $7.15. The customer’s $10 payment equals the cost of the oranges plus the change, so the equation is 11(0.65) + c = 10. This is choice A, “11(0.65) + c = 10.”

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