Solve the problem. First use front end rounding. Then find the exact answer.Find the total amount Lisa stashed in an envelope on her dresser if she placed $478 there at the end of each week, for 7 weeks.
A. Estimate: $3360; exact: $3360
B. Estimate: $3360; exact: $3346
C. Estimate: $3500; exact: $3360
D. Estimate: $3500; exact: $3346
Answer: D
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