Find the distance between P and Q and the coordinates of the midpoint of the segment joining P and Q.
A. 
; 
B. 
; 
C. 
; 
D. 
; 
Answer: B
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 42 ? 45
A. 262,144 B. 16,777,216 C. 16,384 D. 1,048,576
Solve. Write the fraction in simplest form.The total length of a bicycle race is 
of a mile. Gretta has completed 
of a mile. How much does she have left to complete?
A. 
mi
B. 
mi
C. 
mi
D. 
mi
Solve.On a sunny day, a building and its shadow form the legs of a right triangle. If the hypotenuse of the triangle is 32 m long and the shadow is 23 m, how tall is the building? Round to the nearest tenth of a meter.
A. 22.3 m B. 9.0 m C. 39.4 m D. 22.2 m
Solve the problem.Two low-frequency sound waves with similar frequencies, producing the pressures 
and 
combine to form a pressure P = P1 + P2. The variable t is time measured in seconds. Graph P in 
by 
and use the graph to determine the frequency of the displayed beats.
A. 4 beats/sec B. 11 beats/sec C. 8 beats/sec D. 15 beats/sec