E - Answers If a ≠ b and 1/x + 1/a = 1/b, then x =
A. 1/b - 1/a
B. b - a
C. 1/ab
D. a - b/ab
E. ab/a - b
C - Answers The graph of which of the following equations is a straight line parallel to the graph of y = 2x
?
A. 4x - y = 4
B. 2x - 2y = 2
C. 2x - y = 4
D. 2x + y = 2
E. x - 2y = 4
A - Answers An equation of the line that contains the origin and the point (1, 2) is
A. y = 2x
B. 2y = x
C. y = x -1
D. y = 2x +1
E. y/2 = x - 1
E - Answers An apartment building contains 12 units consisting of one- and two-bedroom apartments
that rent for $360 and $450 per month, respectively. When all units are rented, the total monthly rental
is $4,950. What is the number of two-bedroom apartments?
A. 3
B. 4
C. 5
D. 6
, E. 7
D - Answers If θ is an acute angle and sin θ = 1/2, then cos θ =
A. -1
B. 0
C. 1/2
D. √3/2
E. 2
B - Answers 5y(2y - 3) + (2y - 3) =
A. (5y + 1) (2y + 3)
B. (5y + 1) (2y - 3)
C. (5y - 1) (2y + 3)
D. (5y -1) (2y - 3)
E. 10y (2y - 3)
E - Answers One ordering of the letters T, U, V and W from left to right is UTVW. What is the total
number of orderings of these letters from left to right, including UTVW?
A. 8
B. 12
C. 16
D. 20
E. 24
D - Answers From 5 employees at a company, a group of 3 employees will be chosen to work on a
project. How many different groups of 3 employees can be chosen?
A. 3
B. 5
C. 6