A company manufactures two types of wood-burning stoves: a freestanding model and a fireplace-insert model. The cost function for producing x freestanding and y fireplace-insert stoves is . Find the marginal costs ( and 

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?



A.
B. ?
C. ?
D. ?
E. ?

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Answer: D

Mathematics

Write the improper fractions as whole or mixed numbers. 

A. 5
B. 6
C. 5
D. 4

The graph of a quadratic function is given. Find the standard form of the function

A. f(x) = -2(x - 1)² - 2
B. f(x) = - (x - 1)² - 2
C. f(x) = -(x - 1)² - 2
D. f(x) = - (x + 1)² - 2

Solve the problem.A football team gained 24 yards on one play, lost 20 yards on another, and gained 21 yards on the last play of the first half. They had already gained 319 yards during the half. What was the total yardage gain for the first half?

A. 384 yards B. 294 yards C. 344 yards D. 364 yards

Simplify the expression.( - 5)( + 6)

A.  + 1 - 30
B.  + 6 - 5 - 30
C. 2 - 30
D.  - 30