Solve the problem.A firm making toaster ovens finds that the total cost, C(x), of producing x units is given by C(x) = 25x + 640.The revenue, R(x), from selling x units is determined by the price per unit times the number of units sold, thus R(x) = 35x.Find and interpret (R - C)(77).
A. $5260 profit, income exceeds cost
B. -$130 loss, cost exceeds income
C. $130 profit, income exceeds cost
D. $141 profit, income exceeds cost
Answer: C
Mathematics
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Solve the problem.Water is poured into a empty funnel like barrel at a steady constant rate. The diameter of the barrel is 12 inches on the bottom and 24 inches at the top. The height h of the water h is a function of 
What can you say about 
?
A. 
> 0
B. 
= 0
C. 
= k, k is a constant
D. 
< 0
Mathematics
Find the derivative of y with respect to the appropriate variable.y = 9 tanh-1 (cos x)
A. 
B. ln 
sin x
C. 
D. 
Mathematics
Add or subtract as indicated.-0.193 - (-0.7874)
A. 0.6044 B. 0.5944 C. 0.5934 D. 0.6944
Mathematics
Find the sum of the angle measures for the given regular polygon.
A. 360° B. 180° C. 1080° D. 720°
Mathematics