Solve the problem.If the average cost per unit C(x) to produce x units of plywood is given by 
what is the unit cost for 40 units? Round your answer to the nearest cent.
A. $30.00
B. -$10.00
C. $15.00
D. $0.75
Answer: C
Mathematics
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Rationalize the denominator.
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression.644/3
A. 256 B. 16,384 C. 4,096 D. 1,024
Mathematics
Find the distance between the pair of points.(7, -5) and (5, -1)
A. 12
B. 2
C. 12
D. 6
Mathematics
Use the quadratic formula to solve the equation. Give both exact and approximate answers.5x2 + 12x = -2
A. 
; 0.156, -2.556
B. 
; -0.18, -2.22
C. 
; -0.09, -1.11
D. 
; -1.38, -3.42
Mathematics