Solve the problem.The temperature at 2 p.m. on January 14 was -15° Fahrenheit. By 9 p.m. the temperature had risen 22 degrees. Find the temperature at 9 p.m.
A. 37°F
B. -37°F
C. 7°F
D. -7°F
Answer: C
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Rationalize the denominator and simplify. Assume that variables represent positive values.
A. 
B. 
C. 
D. 
The algebraic expression s2 gives the area of a square, where s represents the length of one of its sides. Use this information to find the area of the square.
5 mi
A. 28 sq mi B. 20 sq mi C. 25 sq mi D. 21 sq mi
Solve the problem. Round to the nearest tenth unless indicated otherwise.The resistance of a wire varies directly as the length of the wire and inversely as the square of the diameter of the wire. A 20 foot length of wire with a diameter of 
has a resistance of 
What would the resistance be for a 
length, with diameter 
of the same kind
of wire ? A. 368 ohms B. 375 ohms C. 372.5 ohms D. 387 ohms
Multiply or divide as indicated.
A. 19.07 B. 1.907 C. 0.907 D. 9.07