Determine whether the pair are two equivalent expressions, two equivalent equations, or neither.5x - 2 + 2x + 9 and 7x + 7
A. expressions
B. equations
C. neither
Answer: A
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Use two equations in two variables to solve the following problem.A rancher raises five times as many cows as horses. If he has 132 animals (cows and horses only), how many cows does he have?
A. 110 cows B. 90 cows C. 150 cows D. 100 cows E. 80 cows
Approximate the surface area of the figure using 3.14 for ?. If necessary, round to the nearest tenth.
A. 854.1 in.2 B. 1,155.5 in.2 C. 238.6 in.2 D. 477.3 in.2
Evaluate the expression.42
A. 
B. 
C. 16
D. 8
Solve the given differential equation. (The form of yp is given.)D2y + 25y = 3 sin 5x (Let yp = Ax sin 5x + Bx cos 5x.)
A. y = c1 sin 5x + c2 cos 5x + 
x cos 5x
B. y = c1 sin 5x + c2 cos 5x - 
x sin 5x + 
x cos 5x
C. y = c1 sin 5x + c2 cos 5x - 
x cos 5x
D. y = c1 sin 5x + c2 cos 5x - 
x sin 5x