Rationalize the denominator. Assume all variables have positive values. 
A. 
B. 
C. 
D. x
Answer: C
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Eliminate the parameter of the pair of parametric equations.x = sin t, y = 3 cos t
A. 9x2 + y2 = 9 B. x2 + 9y2 = 9 C. x2 + 9y2 = 1 D. 9x2 + y2 = 1
For the pair of triangles, state the property (SSS, SAS, or ASA) that explains why the triangles are congruent.
A. The triangles are not congruent. B. ASA C. SSS D. SAS
Solve the problem.At Allied Electronics, production has begun on the X-15 Computer Chip. The total revenue function is given by 
and the total cost function is given by 
, where x represents the number of boxes of computer chips produced. The total profit function, P(x), is such that 
. Find P(x).
A. P(x) = -0.3x2 + 54x + 13 B. P(x) = 0.3x2 + 54x - 39 C. P(x) = -0.3x2 + 57x - 13 D. P(x) = 0.3x2 + 57x - 26
Find the expected value.A car agency has found daily demand to be as shown in the table.
Find the expected number of customers.
A. 9 B. 12 C. 10 D. 2