The amount A in an account is given by the formula A = p + i where p is the principal and i is the interest.How much interest was earned if an original deposit (the principal) of $4,250 has grown to be $4,520?
A. $280
B. $270
C. $255
D. $275
E. $250
Answer: B
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Find parametric equations for the line described below.The line through the point P(1, 2, 4) and parallel to the line x = 3t + 4, 
A. x = 3t - 1, y =3t - 2, z = 4t - 4 B. x = 3t + 1, y = 3t + 2, z = 4t + 4 C. x = 3t + 1, y = -3t, z = 4 D. x = 1, y = 4t + 2, z = -3t + 4
Solve.Four squares with sides 3 in. long are cut from the corners of a rectangular metal sheet that has an area of 
The edges are bent up to form an open box with a volume of 
Find the dimensions of the box.
A. Height: 3 in.; length: 16 in.; width: 17 in. B. Height: 3 in.; length: 13 in.; width: 8 in. C. Height: 19 in.; length: 3 in.; width: 14 in. D. Height: 3 in.; length: 22 in.; width: 14 in.
a and b represent the two legs of a right triangle, while c represents the hypotenuse. Find the length of the unknown side.
A. b = 25 B. b = 18 C. b = 20 D. b = 24
Determine if the parabola whose equation is given opens upward or downward.y = -x2 + 2x - 3
A. upward B. downward