A balloon is being inflated at a constant rate of 4 liters of air per minute. If V is the volume, in liters, of the balloon after t minutes, write an equation of change that is satisfied by V.
?
A. 
B. 
C. 
D. 
Answer: A
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Draw a graph of the function and use the graph to answer the question.The cost of tuition at one community college is $300 plus $125 per credit. Graph the equation, and find the cost if a student registers for 15 credits.
A. $2325
B. $1125
C. $2175
D. $1925
Find the surface area or volume.Use an integral table and a calculator to find to two decimal places the area of the surface generated by revolving the curve 
about the x-axis.
A. 378.08 B. 189.04 C. 324.07 D. 265.13
Solve the problem.Suppose that the acceleration of an object is given by a(t) = 5t2/3 + 2e-t. The velocity of the object at time 0 is v(0) = 12 and its position at time 0 is s(0) = -7. Find s(t).
A. 3t5/3 - 2e-t + 14
B. 
+ 2e-t + 10t - 9
C. 
+ 2e-t + 12t - 7
D. 
+ 2e-t +14t - 9
Use < or > for ? to write a true sentence. Draw a number line if necessary.742 ? 788
A. < B. >