The length of skid marks when a car skids to a stop is a power function of the speed the car is traveling when the brakes are applied. It is observed that if the speed is doubled, the skid mark length increases by a factor of 4. What is the value of the power ?k for this power function? Round your answer to two decimal places if necessary.
?
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Evaluate the expression.71
A. 7
B. 1
C. -7
D. 
Mathematics
Answer the following statement(s) true (T) or false (F)
Zazkis (1998) found that students often considered the existence of a factor of 2 to be an indicator of evenness, but that the lack of a factor of 2 was not often considered an indicator of oddness.
Mathematics
Find the sum or difference. Write the answer in standard form.3
- (7
+ i) + 9i - (-2
+ 9i)
A. -2
- i
B. -2
+ i
C. -2 - 17i
D. 2 - 17i
Mathematics
Find f(x) and g(x) such that h(x) = (f ? g)(x).h(x) = 
A. f(x) = 
, g(x) = 84x2 + 20
B. f(x) = 
, g(x) = 
C. f(x) = 84x2 + 20, g(x) = 
D. f(x) = 
, g(x) = x2
Mathematics