Find the value of the expression using the given values.
+ 
x = -5, y = 7
A. -2
B. -12
C. 2
D. 12
Answer: D
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Sketch the surface z = f(x,y).f(x, y) = 5 - y
A. 
B. 
C. 
D. 
Solve the problem.Barbara's regular hourly rate is $12 for a 40-hour work week. She is paid time-and-a-half for each hour worked on weekends. One week Barbara worked 40 hours from Monday through Friday and 8 hours on Saturday. Find her gross pay for the week.
A. $192 B. $576 C. $480 D. $624
Solve. The distance, in feet, it takes a car traveling at x mph to come to a full stop after hitting the brakes is given by 
Find the stopping distance for a speed of 60 mph. Round your answer to the nearest foot.
A. 4541 ft B. 4487 ft C. 4 ft D. 4504 ft
Arrange in order from smallest to largest.0.07, 0.03, 0.037, 0.073
A. 0.037, 0.073, 0.03, 0.07 B. 0.073, 0.037, 0.07, 0.03 C. 0.03, 0.07, 0.037, 0.073 D. 0.03, 0.037, 0.07, 0.073