Cracking The SAT Premium

A) 1.5h +   20d >   60

h   +   d   ≤   6

B) 1.5h +   20d >   60

h   +   d   ≥   6

C) 1.5h +   20d <   60

h   +   d   ≥   360

D) 20 h +   1.5d    >   6

h   +   d   ≤   60

19 .In a certain sporting goods manufacturing company, a quality control expert tests a
randomly selected group of 1,000 tennis balls in order to determine how many contain
defects. If this quality control expert discovered that 13 of the randomly selected tennis
balls were defective, which of the following inferences would be most supported?
A) 98.7% of the company’s tennis balls are defective
B) 98.7% of the company’s tennis balls are not defective
C) 9.87% of the company’s tennis balls are defective
D) 9.87% of the company’s tennis balls are not defective

20 .If – < –3z + 6 < – , what is the greatest possible integer value of 9z – 18 ?

A) 6

B) 7

C) 8

D) 9

21.

–24 –   8j  =   12k

                3   +    k  =   − j

Which   of  the following   ordered pairs   (j, k)  is  the solution    to  the system  of  equations

above?

A) (6,  –6)

B) (3,  0)

C) (0,  2)

D) (–4, 1)

22.

United  States  Investment  in  Alternative Energy  Sources

(^) Actual Projected