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. 5 years
B. 6 years
C. 4 years
D. 7 years
Answer: A
Mathematics
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Use cylindrical coordinates to find the volume of the indicated region.the region bounded below by the xy-plane, laterally by the cylinder 
and above by the plane 
A. 100? B. 5? C. 20? D. 25?
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Solve the problem.The area of the base B and the height h of a pyramid are related to the pyramid's volume V by the formula 
How is dV/dt related to dh/dt if B is constant?
A. 
= 
B. 
= 
C. 
= B
D. 
= 
Mathematics
Solve the problem.A projectile is thrown upward so that its distance (in feet) above the ground after t seconds is 
What is its maximum height?
A. 4212 ft B. 14,256 ft C. 191,412 ft D. 5915 ft
Mathematics
Write the number in expanded form.218
A. 2000 + 100 + 80 B. 21,800 C. 800 + 10 + 2 D. 200 + 10 + 8
Mathematics