The correct answer is B. The greatest number of hours you can spend raking and still make at least $ 68.00 is 4 hours.
Given that you can earn money by babysitting for $ 8.00 per hour and by raking leaves for $ 7.00 per hour, and you have 9 hours available to work, to determine what is the greatest number of hours you can spend raking and still make at least $ 68.00, you must perform the following calculation:
- 3 x 7 + 6 x 8 = 21 + 48 = 69
- 4 x 7 + 5 x 8 = 28 + 40 = 68
- 5 x 7 + 4 x 8 = 35 + 32 = 67
- 6 x 7 + 3 x 8 = 42 + 24 = 66
Therefore, the greatest number of hours you can spend raking and still make at least $ 68.00 is 4 hours.
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