Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = 2x2 + 8x + 0
A. Increasing on (8, ?); decreasing on (-?, 8)
B. Increasing on (2, ?); decreasing on (-?, 2)
C. Increasing on (-2, ?); decreasing on (-?, -2)
D. Increasing on (-4, ?); decreasing on (-?, -4)
Answer: C
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Find the domain and range of the inverse of the given function.f(x) = 
, x ? 0
A. Domain: (-?, 0}; range: [-5, 0) B. Domain and range: [0, ?) C. Domain: [0, ?); range: (0, 5] D. Domain: (0, 5]; range: [0, ?)
Decide whether the expression is or is not an identity.sin (A + 4?) = cos (A + ?)
A. Not an identity B. Identity
Find the x- and y-intercepts of f.f(x) = (x + 1)(x - 7)(x - 1)2
A. x-intercepts: -1, 1, -7; y-intercept: 7 B. x-intercepts: -1, 1, -7; y-intercept: -7 C. x-intercepts: -1, 1, 7; y-intercept: -7 D. x-intercepts: -1, 1, 7; y-intercept: 7
Multiply.8 ? (-1) ? 10 ? (-5)
A. 400 B. -400 C. 3 D. 58