Add or subtract as indicated.

A. 4.416
B. 5.000
C. 4.384
D. 5.384


Answer: C

Mathematics

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A balloon is initially full of air, but then it springs a leak. It leaks at a constant rate of 6 cubic inches per minute.  After a while the leak is patched, a pump is attached, and the balloon is re-inflated to its original volume.  The pumping rate is constant at 7 cubic inches per minute.  Let B denote the volume, in cubic inches, of air in the balloon after t minutes.

? A: Explain in practical terms the meaning of . B: During the time the balloon is leaking air, what is the value of  ? C: During the time air is being pumped into the balloon, what is the value of ? What will be an ideal response?

Mathematics

Provide an appropriate response.What is the x-intercept of the function f(x) = log(x + 4)?

A. (5, 0) B. (-3, 0) C. (-4, 0) D. (4, 0)

Mathematics

Write the function in terms of its cofunction. Assume that any angle in which an unknown appears is an acute angle.sec 29.7°

A. cos 150.3° B. csc 60.3° C. cos 60.3° D. csc 29.7°

Mathematics

Solve.The amount of water used to take a shower is directly proportional to the amount of time that the shower is in use. A shower lasting 23 minutes requires 13.8 gallons of water. Find the amount of water used in a shower lasting 8 minutes.

A. 4.8 gallons B. 5.4 gallons C. 4.2 gallons D. 184 gallons

Mathematics