Find an equation for the parabola described.Vertex at (7, 8); focus at (3, 8)
A. (y - 8)2 = -16(x - 7)
B. (x - 8)2 = -20(y - 8)
C. (x - 8)2 = 20(y - 8)
D. (y - 8)2 = 16(x - 7)
Answer: A
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Solve the problem.A publisher spends 70,000 on a book for development, editing, and advertising. It costs the publisher 
per copy at the printer. Find the linear cost function to publish a book. If the publisher charges 
per copy, how many books must be sold to break even? (Round to the nearest unit.)
A. C(x) = 24.05x + 70,000 break-even = 5647 B. C(x) = 70,000x + 1.94 break-even = 1500 C. C(x) = 1.94x + 70,000 break-even = 2693 D. C(x) = 1.94x + 70,000 break-even = 3166
Write the percent as a decimal.800%
A. 80 B. 8.01 C. 0.8 D. 8
Use = or ? for ? to write a true sentence.
? 
A. ? B. =
Given f(x) and g(x), find the sum or difference as indicated.If f(x) = 5
and g(x) = 
, find f(x) - g(x).
A. 6
B. 7
C. 10
D. 7a