(D) 42.50 + 90x
(E) 42.50 + 1.5x
5 . Solve for x: 64x =
4 x^2 −4.
x = 4 or x =
−1
(A)
(B) x = −4 or x = 1
(C) x = 10
(D)
(E) x = 3
6 . A rectangular solid has three faces with areas of 28, 20, and 35 square
centimeters. What is the volume of this solid?
(A) 83 cubic cm
(B) 140 cubic cm
(C) 166 cubic cm
(D) 196 cubic cm