Solve for the specified variable.
= 
, for z
A. z = 
B. z = 
C. z = 
D. z = 
Answer: A
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Solve.-3(1.8y - 4.3) + 6.4y = 6.7
A. 6.2 B. -6.2 C. -19.6 D. 19.6
Find the slope of the graph and they y -intercept. Then sketch the graph for values of x between -10 and 10.y = -4x - 1
A. slope = -4; y intercept = (-1, 0)
B. slope = - 
; y intercept = (0, -1)
C. slope = - 
; y intercept = (-1, 0)
D. slope = -4; y intercept = (0, -1)
Suppose the average costs of a mining operation depend on the number of machines used, and average costs, in dollars, are given by
, 
, where x is the number of machines used. What is the minimum average cost? Round your answer to the nearest dollar.
?
A. $0 B. $35 C. $490 D. $245 E. $8,582
What mixed numbers have been graphed on the number line?
?
What will be an ideal response?