Find the domain and range of the function.F(t) = t2 - 7
A. D: [-49,?), R: [-7,?)
B. D: (-?, ?), R: [-7,?)
C. D: [0, ?), R: (-?, -7]
D. D: (-?, ?), R: (-?, ?)
Answer: B
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Find the domain of the logarithmic function.f(x) = log3(x2 + 4x + 4)
A. (-?, -2) ? (-2, ?) B. (-2, ?) C. (2, ?) D. (-?, 0) ? (0, ?)
Factor by any method.15x4 + 22x2 + 8
A. (3x2 + 1)(5x2 + 8) B. (3x2 + 2)(5x2 + 4) C. (5x2 - 4)(3x2 - 2) D. (15x2 + 2)(x2 + 4)
First, use front-end rounding to round each number and estimate the answer. Then, find the exact answer.Tran's subtotal at Scramble's Electronics is $340.96. The sales tax on these items is $22.07. What was Tran's total bill?
A. Estimate: $280; exact: $318.89 B. Estimate: $320; exact: $363.03 C. Estimate: $363.03; exact: $363.03 D. Estimate: $300; exact: $363.03
Solve the problem.A rectangle has its center at the origin. It has two sides of length 4a which are parallel to the horizontal axis and two sides of length 2a parallel to the vertical axis. Find polar coordinates of the vertices.
A. ? (a
, 30°), (a
, 150°), (a
, 210°), (a
, 330°)
B. ? (2a
, 26.6°), (2a
, 153.4°), (2a
, 206.6°), (2a
, 333.4°)
C. ? (a
, 26.6°), (a
, 153.4°), (a
, 206.6°), (a
, 333.4°)
D. ? (2a
, 63.4°), (2a
, 116.6°), (2a
, 243.4°), (2a
, 296.6°)