SAT Subject Test Mathematics Level 1

Sphere: If  r   =   radius, then

and Surface Area    =   4πr^2.

Pyramid: If B   =   area    of  the base    and h   =   height, then

1 . If 2a + 3 = 6, then

(A)

(B)

(C) 1

(D) 2

(E) 3

2 . In terms of x, what is the average (arithmetic mean) of 4x – 2, x + 2, 2x +
3, and x + 1?

(A) 2 x –   1

(B) 2 x

(C) 2 x +   1

(D) 2 x +   4