Simplify.5.2x - 1.2y - 3.1x + 9y + 2.2x
A. 4.3x + 7.8y
B. 4.3x + 10.2y
C. 4.3x - 1.2y + 9
D. 10.5x + 7.8y
Answer: A
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Factor the trinomial.9x2 - 32x - 16
A. (x - 4)(x - 4) B. (4x + 9)(x - 4) C. (9x + 4)(x - 4) D. (x + 9)(x - 4)
Given that f(x) = sin x, g(x) = cos x, and h(x) = tan x, evaluate the given function. The point (x, 
), on the circle 
, also lies on the terminal side of an angle ? in standard position. The point 
, on the circle 
, also lies on the terminal side of an angle ? in quadrant IV. h(? - ?)
A. 
B. 
C. 
D. 
Solve the inequality. Write the answer in set-builder notation.
+ 5 ? 9
A. {x
x ? 8}
B. {x
x < 10}
C. {x
x ? 8}
D. {x
x ? -2}
Solve the problem.The amount of particulate matter left in solution during a filtering process is given by the equation 
where n is the number of filtering steps. Find the amounts left for 
and 
(Round to the nearest whole number.)
A. 600, 38 B. 600, 19 C. 600, 9600 D. 1200, 38