Determine the symmetries of the curve.r2 = 3 cos 3?
A. x-axis only
B. Origin only
C. y-axis only
D. x-axis, y-axis, origin
Answer: D
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Decide whether the equation describes a function.y = 5x - 8
A. yes B. no
Solve the problem.The shape of a barbecue pit is like a parallelogram with height of 40 in. and a base of 60 in. It costs $0.80 per ft2 to fill the pit with charcoals. How much does it cost?
A. $13.33 B. $160.00 C. $53.33 D. $1920
Select the graph of f and f –1 on the same set of coordinate axes for f(x) = 2x – 3.
a. 
b. 
c. 
d. 
Solve the problem.The change in a certain engineer's salary over time can be approximated by the linear equation 
where y represents salary in dollars and x represents number of years on the job. According to this equation, after how many years on the job was the engineer's salary $55,000?
A. 7 years B. 6 years C. 4 years D. 5 years