Solve for the specified variable.S = 
for r
A. r = 
- 1
B. r = S - a
C. r = 
D. r = 
Answer: C
Mathematics
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Establish the identity.
= 
What will be an ideal response?
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Using the variable x, write the interval as an inequality.
A. -3 ? x ? 1 B. -3 < x < 1 C. x ? -3 or x ? 1 D. x < -3 or x > 1
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Provide an appropriate response.The total cost to produce x units of paint is 
Find the marginal average cost function.
A. 
'(x) = 70x + 41
B. 
'(x) = 70 - 
C. 
'(x) = 35 - 
D. 
'(x) = 35x + 41 + 
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