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Martha and her brother started their own car-washing business. They charge $8.50 per car. If they wash on average 22 cars per weekend, use front-end estimation to find out about how much their business will earn in 5 weeks. A. $800 B. $1000 C. $1200 D. $1350

Question

Martha and her brother started their own car-washing business. They charge 8.50percar.Iftheywashonaverage22carsperweekend,usefrontendestimationtofindoutabouthowmuchtheirbusinesswillearnin5weeks.A.8.50 per car. If they wash on average 22 cars per weekend, use front-end estimation to find out about how much their business will earn in 5 weeks. A. 800 B. 1000C.1000 C. 1200 D. $1350

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Solution

Step 1: Calculate the earnings per weekend. Martha and her brother charge 8.50percarandtheywash22carsperweekend.So,8.5022=8.50 per car and they wash 22 cars per weekend. So, 8.50 * 22 = 187 per weekend.

Step 2: Calculate the earnings for 5 weeks. Since there are 2 days in a weekend and they work every weekend for 5 weeks, they will work for a total of 5 weekends. So, 187 * 5 = $935.

Step 3: Use front-end estimation. This means we round the number to the nearest hundred. So, 935roundsupto935 rounds up to 1000.

So, the answer is B. $1000.

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