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Rom4ik [11]
2 years ago
14

I will mark brainiest if you answer ty also you can answer one of them or both tysm i will mark brainliest for both

Mathematics
1 answer:
rewona [7]2 years ago
5 0

Step-by-step explanation:

a) The total cost C is given by

C = \$60n + \$40

b) If the total cost is $400, then we can solve for the number of hours as

\$400 = \$60n + \$40 \Rightarrow \$360 = \$60n

Solving for n, we get

n = \dfrac{\$360}{\$60} = 6\:\text{hrs}

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