Solve.BT&T charges $0.31 for the first minute and $0.28 for each additional minute for a long-distance call. How much will a 30 minute long-distance call cost?
A. $8.43
B. $8.40
C. $9.30
D. $8.71
Answer: A
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Determine all pairs (x, y) of integer values of x and y that satisfy the equation.|x| + |y| = 1
A. (0, 1), (0, -1), (1, 0), (-1, 0), (1, -1), (-1, 1) B. (0, 1), (1, 0) C. (0, 1), (0, -1), (1, 0), (-1, 0), (1, -2), (-1, 2), (2, -1), (-2, 1) D. (0, 1), (0, -1), (1, 0), (-1, 0)
Determine where the function is increasing and where it is decreasing.f(x) = -x2 - 12x
A. increasing on (6, ?) decreasing on (-?, 6) B. increasing on (-?, -6) decreasing on (-6, ?) C. increasing on (-?, 6) decreasing on (6, ?) D. increasing on (-6, ?) decreasing on (-?, -6)
Polar coordinates of a point are given. Find the rectangular coordinates of the point.(5, -27°)
A. (-4.5, 2.3) B. (2.3, -4.5) C. (-2.3, 4.5) D. (4.5, -2.3)
Tell which set or sets the number belongs to: natural, whole, integer, rational, irrational, real.-9.55
A. real B. real, rational, natural C. rational D. real, rational