Simplify the expression.
w + 
w
A. 
w
B. 
w2
C. 
w2
D. 
w
Answer: D
Mathematics
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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) = 
Mathematics
Solve the equation for x if 
.
?
?
A. 
, 
B. 
, 
C. 
, 
D. 
, 
E. 
, ,
Mathematics
For the function f, use composition of functions to show that f-1 is as given.
, 
What will be an ideal response?
Mathematics
Perform the indicated operation and write the answer in simplest form.- 
? - 
A. 
B. - 
C. - 
D. 
Mathematics