Solve the problem.Given the following revenue and cost functions, find the maximum profit. (Recall that profit equals revenue minus cost.) R(x) = 80x - 2x2; C(x) = 24x + 100
A. $292
B. $492
C. $684
D. $392
Answer: A
Mathematics
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Find the value of the specified finite sum.Given 
= -6 and 
= 8, find 
.
A. 48 B. -14 C. -16 D. 14
Mathematics
Graph the function.y = csc x
A. 
B. 
C. 
D. 
Mathematics
Give the focus, directrix, and axis for the parabola.x = 10y2
A. 
, y = - 
, y-axis
B. 
, x = 
, x-axis
C. 
, x = - 
, x-axis
D. 
, x = - 
, x-axis
Mathematics
Solve using the elimination method. Use a graphing calculator to check your answer. x + 9y = -48 9x + 8y = -67
A. (-4, -4) B. (-3, -5) C. (3, -4) D. No solution
Mathematics