Simplify the expression.
?
?
A. 3
B. - 3
C. 75
D. 2
E. - 2
Answer: A
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Determine the quadratic function whose graph is given.
A. f(x) = x2 - 4x B. f(x) = -x2 - 4x C. f(x) = -x2 + 4x D. f(x) = x2 + 4x
Factor completely.20x4 - 15x2 + 12x2 - 9
A. (20x2 - 3)(x2 + 3) B. (5x2 - 3)(4x2 + 3) C. (5x2 + 3)(4x2 - 3) D. (5x4 + 3)(4x - 3)
Write an expression in terms of the given variable(s) that represents the indicated quantity.The amount of money in cents in a jar containing n nickels and some dimes and some quarters if there are 3 times as many dimes as nickels and twice as many quarters as dimes.
A. 85x cents B. 175x cents C. 110x cents D. 185x cents
Express the sum or difference as a product of sines and/or cosines.sin 
+ sin 
A. 2 sin 
sin ?
B. 2 sin 
cos ?
C. 2 cos(7?) sin ?
D. 2 sin(7?)