Let the numbers be x = 5x+18
3(5x+18) + 4x= 16
15x+ 54+ 4x= 16
19x = 16-54
X=-38/19
X= -2
5x+18= 5 × -2+18 = 8
(40×5)+(2×5) so 40×5=200 and 2×5=10 so 200+10=210
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.
9: B right
10: C obtuse
11: B right
12: B right
I hope they are right! Sorry if they are not!
Answer:
0.631
Step-by-step explanation: