Simplify.(
- 7)(
- 5)
A. 
- 12
+ 35
B. 
- 5
- 7
+ 35
C. 
+ 35
D. -11
+ 35
Answer: B
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A. 
B. 
C. 
D. 
E. none of these
Convert as indicated. If necessary, round to two decimal places.27.6 meters to feet
A. 30.08 ft B. 25.23 ft C. 90.53 ft D. 8.42 ft
Solve the problem.A balloon (in the shape of a sphere) is being inflated. The radius is increasing at a rate of 14 cm per second. Find a function, r(t), for the radius in terms of t. Find a function, V(r), for the volume of the balloon in terms of r. Find (V ? r)(t).
A. (V ? r)(t) = 
B. (V ? r)(t) = 
C. (V ? r)(t) = 
D. (V ? r)(t) = 
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