Add.
A. 83
B. 56
C. 38
D. 65
Answer: C
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A balloon is leaking air, and the rate of change in volume is proportional to the volume. Let V denote the volume, in liters, of air in the balloon after t seconds, and take -0.03 to be the constant of proportionality.
?
A: Write an equation of change satisfied by 
.
?
B: If there are initially 8 liters of air in the balloon, find a formula that gives V as a function of t. Write your answer using the alternative form for an exponential function.
?
C: How long will it take for 10% of the initial volume of air to leak from the balloon? Round your answer to two decimal places.
What will be an ideal response?
Provide an appropriate response.A welder can make 12 welds in an hour. How many welds can 15 welders working at this rate make in an 8 hour day?
A. 180 B. 1,440 C. 1,280 D. 640 E. none of the above
Convert the angle to radians. Leave as a multiple of ?.-36°
A. - 
B. - 
C. - 
D. - 
Solve.In one year, a baseball player got 148 hits in 483 times at bat. What was his batting average? Give decimal notation to the nearest thousandth.
A. 0.316 B. 0.306 C. 0.309 D. 0.286