11 . If then x =
(A) 2.5
(B) 3.0
(C) 3.5
(D) 4.0
(E) 4.5
12 . If then 10 ↓ 3 ≈
(A) 1.12
(B) 1.69
(C) 2.15
(D) 2.71
(E) 3.33
13 . Which of the following ordered pairs is the solution to the equations
2 y +
x = 5 and –2y + x = 9?
(A) (–7, –1)
(B) (–1, 7)
(C) (7, –1)
(D) (–7, 1)
(E) (1, 7)