Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve the problem.A grasshopper is perched on a reed 5 inches above the ground. It hops off the reed and lands on the ground about 7.9 inches away. During its hop, its height is given by the equation 
, where x is the distance in inches from the base of the reed, and h is in inches. How far was the grasshopper from the base of the reed when it was 3.25 inches above the ground? Round to the nearest tenth.
A. 0.9 in. B. 7.9 in. C. 6.7 in. D. 1.3 in.
Mathematics
Which of the following is a factor of the expression 
?
?
A. 
B. 
C. 
D. 
Mathematics
Use the given graph to determine the limit, if it exists.
f(x) and 
f(x).
A. 5; -4 B. 1; 1 C. -4; 5 D. does not exist
Mathematics
Simplify the complex fraction.
A. 
B. 
C. 
D. 
Mathematics