Solve the problem.A cable TV company charges $23 per month for the basic service plus $7 for each movie channel. Express the cost of a monthly cable bill as a function of additional movie channels.
A. C(x) = 23x + 7
B. C(x) = 7x + 23
C. C(x) = 7x - 23
D. C(x) = 23x - 7
Answer: B
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Find the length of the curve with the given vector equation.r(t) = (2t sin t + 2 cos t)i + (2t cos t - 2 sin t)j ; -4 ? t ? 5
A. 9 B. 82 C. 18 D. 41
Let A = {1, 3, 5, 7}B = {5, 6, 7, 8}C = {5, 8}D = {2, 5, 8}U = {1, 2, 3, 4, 5, 6, 7, 8}.Determine whether the statement is true or false.{0} ? U
A. False; the empty set is a subset of set U. B. False; {0} is not a subset of set U, because 0 is not an element of U. C. True D. False; 0 is an element of set U, not a subset.
Give all possible rational zeros for the following polynomial.P(x) = -2x4 + 5x3 + 3x2 + 18
A. ±1, ± 
, ±2, ±3, ±6, ±9, ±18
B. ±1, ± 
, ±2, ±3, ± 
, ±6, ±9, ± 
, ±18
C. ±1, ±2, ±3, ±6, ±9, ±18
D. ±1, ±2, ± 
, ± 
, ± 
, ± 
, ± 
Solve the equation in the real number system.2x3 - x2 + 2x - 1 = 0
A. 
B. 
C. 
D. 