Find a cofunction with the same value as the given expression.csc 13°
A. sec 13°
B. sec 77°
C. sec 103°
D. sin 13°
Answer: B
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Find the product.(x + 2y)3
A. x3 + 6x2y + 12xy2 + 8y3 B. x3 + 8y3 C. x3 + 2x2y + 4xy + 4xy2 + 8y2 + 8y3 D. 3(x + 2y)
Provide an appropriate response.Two supermarkets, R and C, want to run a promotional on the same item. A market research firm provided the payoff matrix below, where each entry indicates the percentage of customers going to market R at the indicated prices of that item. Find the saddle value, and the optimum strategy for each store. Store C 
Store R 
A. 60%; R sells the item at $1.85, C sells the item at $1.55. B. 50%; R sells the item at $1.85, C sells the item at $1.55. C. 50%; R sells the item at $1.55, C sells the item at $1.85. D. 60%; R sells the item at $1.55, C sells the item at $1.85.
Use I = Prt for simple interest to find the indicated quantity.P = $13,500; t = 4 months; I = $517.50. Find r.
A. 11.7% B. 7.7% C. 3.8% D. 11.5%
Factor completely.15x2 + 4x - 4
A. (15x + 2)(x - 2) B. (3x + 2)(5x - 2) C. (15x + 1)(x - 4) D. (3x - 2)(5x + 2)