Solve the problem.A balloon (in the shape of a sphere) is being inflated. The radius is increasing at a rate of 10 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) = 
Answer: B
Mathematics
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The power supply provides 725 mA to the circuit. I3 = 500 mA. What is I1?
a. 1.225 mA
b. 1.00 A
c. 612 mA
d. 225 mA
e. Cannot be solved without knowing I2
Mathematics
Determine whether the sequence is arithmetic. If the sequence is arithmetic, determine the first term a and common difference d.2, 4, 6, 10, 12, . . .
A. Arithmetic; a = 2, d = 2 B. Not arithmetic
Mathematics
Find the distance between the points.(2, -4), (6, -6)
A. 2
B. 6
C. 12
D. 12
Mathematics
Simplify the expression. Assume that all variables represent nonnegative real numbers.
+ 6
+ 2
A. 49x
B. 8x
C. 49x
D. 8x
Mathematics