Solve the equation.
- 3 = 1
A. {-4}
B. {8}
C. {-8}
D. {4}
Answer: B
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Given f(x) and g(x), find the composition.f(x) = 4x2 + 4x + 8; g(x) = 4x - 6Find (g ? f)(x).
A. (g ? f)(x) = 4x2 + 16x + 26 B. (g ? f)(x) = 16x2 + 16x + 38 C. (g ? f)(x) = 16x2 + 16x + 26 D. (g ? f)(x) = 4x2 + 4x + 2
Solve.One end of a wire is attached to the top of a 10-foot pole and the other end is anchored into the ground 5 feet from the base of the pole. Find the length of the wire, rounded to the nearest tenth.
5 feet
A. 15 ft B. 15.5 ft C. 11.7 ft D. 11.2 ft
Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = x2 - 8x - 20
A. Increasing on (-?, 4); decreasing on (4, ?) B. Increasing on (4, ?); decreasing on (-?, 4) C. Increasing on (- 4, ?); decreasing on (-?, - 4) D. Increasing on (-?, - 4); decreasing on (- 4, ?)
Multiply and, if possible, simplify.
? 
A. 14x
B. 9
C. 2
D. 7