Solve the problem.The golden ratio ? is the positive solution of the equation
A. x2 = 1 + x.
B. x2 = 1 - x.
C. x2 = 
.
D. x = 1 + x2.
E. none of these
Answer: A
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Solve the problem.A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 4% cement should he mix with 5 bags of 18.4% cement to produce a mix containing 10% cement?
A. 17 bags B. 7 bags C. 9 bags D. 12 bags
The following expressions represent denominators of rational expressions. Find their LCD.x2 - 8x + 15 and -2x + 10
A. -2(x + 3)(x - 5) B. -2(x - 3)(x + 5) C. -2(x + 3)(x + 5) D. -2(x - 3)(x - 5)
Write an equation for a function whose graph fits the given description.The graph of f(x) = x2 is shifted 7 units to the left and 2 units downward.
A. y = (x - 7)2 - 2 B. y = (x - 2)2 + 7 C. y = (x + 7)2 - 2 D. y = (x + 2)2 - 7
Translate to an equation and solve.127.4 is what percent of 14?
A. 10.99% B. 9.1% C. 1.1% D. 910%