Solve the problem.A repair company's charge for repairing a certain type of copy machine fits the model 
where y is the amount charged in dollars and x is the number of minutes the repair person is on the job. How many minutes would it take for the cost of repair to reach $130? (Round to the nearest minute.)
A. 13 min
B. 134 min
C. 287 min
D. 203 min
Answer: B
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Solve the problem. First use front end rounding. Then find the exact answer.Troy Alvin had $3584 in his checking account. He wrote checks for $391, $628, and $104 during the course of one week. Find the amount remaining in his account.
A. Estimate: $2900; exact: $2464 B. Estimate: $2480; exact: $2461 C. Estimate: $2900; exact: $2461 D. Estimate: $2480; exact: $2464
Perform the indicated operations. Simplify if possible.
÷ 
A. 
B. 
C. 
D. 
Describe how the hypotenuse of a 45°–45° triangle compares to the length, s, of the legs of the triangle.
What will be an ideal response?
First, use front-end rounding to round each number and estimate the answer. Then, find the exact answer.Julian's grocery bill was $9.32. He gave the clerk a $20 bill. How much change should he receive?
A. Estimate: $11; exact: $10.67 B. Estimate: $11; exact: $9.68 C. Estimate: $11; exact: $10.68 D. Estimate: $9; exact: $9.32