Simplify.(-2x4)(4x2) + (2x2)(-2x4)
A. -4x16
B. -4x6
C. -12x6
D. -12x16
Answer: C
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Solve the formula for the specified letter.F = 
for m2
A. m2 = 
B. m2 = 
C. m2 = 
D. m2 = FGm1d2
Solve the problem.A cable TV company charges $24 for the basic service plus $8 for each movie channel. Let y be the total cost in dollars of subscribing to cable TV, using x movie channels. Find the slope-intercept form of the equation.
A. y = 24x - 8 B. y = 8x - 24 C. y = 8x + 24 D. y = 24x + 8
The graph of a function f is given. Use the graph to answer the question.For what numbers x is f(x) < 0?
A. (-12, ?) B. (-12, 14) C. (-?, -12) D. [-20, -12), (14, 20)
Solve the problem.When the angle of elevation of the sun is ?, a tree casts a shadow. Write a formula which expresses the length of the tree's shadow, y, as a function of the angle ? and the height of the tree, x.
A. y = x cos ?
B. y = x tan ?
C. y = 
D. y = x cot ?