Answer:
The cost of parts was $65.
Step-by-step explanation:
Let the cost of parts = x
35 + 21(3) + 1.10x = 169.50
98 + 1.10x = 169.50
71.50 = 1.10x
71.50/1.10 = 65
Answer:
2444
Step-by-step explanation:
The total cost is the integral of the marginal cost.

The total cost of producing units 144 through 625 is 2444.
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If all you need is a number, a graphing calculator can give you that.
Answer:
123445
Step-by-step explanation:
125123254125
Answer:
evaluate the function with -3 as x value
Step-by-step explanation:
4(-3) + 5
-12 + 5
= -7