Graph the hyperbola.7x2 - 4y2 = 56
A. 
B. 
C. 
D. 
Answer: B
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Evaluate or simplify the given expression.cos(2 sin-1 x)
A. 1 - x2 B. 2x2 + 1 C. 1 - 2x2 D. 1
Solve the problem.The strength S of a rectangular wooden beam is proportional to its width times the square of its depth. Find the dimensions of the strongest beam that can be cut from a 
cylindrical log. (Round answers to the nearest tenth.)
A. w = 6.8; d = 7.2 B. w = 6.8; d = 9.2 C. w = 4.8; d = 9.2 D. w = 5.8; d = 8.2
Graph the polynomial function. Use synthetic division and the remainder theorem to find the zeros.f(x) = x3 + 4x2 - 3x - 18
A. 3 (multiplicity 2), 2;
B. -2 (multiplicity 2), 2;
C. -3 (multiplicity 2), 2;
D. -3, 3, 2;
Solve the problem.You have $50,000 and wish to invest part at 10% and the rest at 6%. How much should be invested at each rate to produce the same return as if it all had been invested at 9%?
A. $37,500 at 6%, $12,500 at 10% B. $37,000 at 10%, $13,000 at 6% C. $37,000 at 6%, $13,000 at 10% D. $37,500 at 10%, $12,500 at 6%