[[((3^3 - 7) • 5)/10] + ((1+3+6+9)-10)]
1 answer:
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Answer:
2 possible solutions are c = 7, d = 3 and c = 8, d = 2
Step-by-step explanation:
Let d be the number of hours you walk dogs and c be the number of hours you wash cars. Note that
1. You can work at most 11 hours next week, so
2. Your dog-walking job pays $9 per hour, so for d hours you will earn $9d. Your job as a car wash attendant pays $6 per hour, then for c hours you will be paid $6c. In total, you will earn $(9d+6c) that must be at least $60.
So,
3. You get following system of inequalities:
The diagram shows the solution set to the system of these inequalities.
2 possible solutions are c = 7, d = 3 and c = 8, d = 2
