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Raquel works in a pet store every day after school and sometimes on weekends. She earns $5.20 per hour. If Raquel works 21 hours a week, use front-end estimation to find out how much she will earn in four weeks.

A. $360
B. $400
C. $480
D. $520

Respuesta :

Answer:

B

Step-by-step explanation:

$5.20 is about $5.00, 21 is about 20, so $5.00 * 20 *4 = $400.

Checking this: $5.20 * 21 * 4 = $436.80
21 hours Times 4 weeks = 84*5.20=436.8 and then if you estimate each 400 answer is B

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