Find the slope of the line through the pair of points.
and 
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.Bill kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the mean number of hours Bill spent exercising per week. Round your answer to the nearest tenth of an hour.
A. 7.6 hours B. 8.3 hours C. 8.5 hours D. 8.0 hours
Solve the problem.A roller mechanism follows a path described by y = 
, where units are in feet. If 
find the magnitude and direction of the velocity (in ft/s) at the point 
A. 4.0 ft/s, 63° B. 4.5 ft/s, 77° C. 4.5 ft/s, 63° D. 4.0 ft/s, 77°
Decide whether the expression is or is not an identity.tan2 
= 
A. Identity B. Not an identity
Graph the function.Use the graph of f(x) = 2x to obtain the graph of g(x) = 2x + 2 + 1.
A. 
B. 
C. 
D. 