Simplify the expression. Assume that all variables are positive when they appear.
A. 3
B. 4
C. 2
D. ±2
Answer: C
Mathematics
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Compute the gradient of the function at the given point.
A. ?f = - 
i + 
j
B. ?f = - 
i + 
j
C. ?f = - 
i - 
j
D. ?f = - 
i - 
j
Mathematics
Solve.The amount of tread left on a tire varies inversely as the number of miles the tire has traveled. A tire that has traveled 66,000 mi has 
in of tread left. How much tread will be left on a tire that has traveled 57,000 mi? Express your answer as a simplified fraction.
A. 
in.
B. 
in.
C. 
in.
D. 
in.
Mathematics
Use your graphing calculator to determine if the equation appears to be an identity or not by graphing the left expression and right expression together.
?
?
A. not an identity B. is an identity
Mathematics
Graph.y = 
x2
A. 
B. 
C. 
D. 
Mathematics