?Volume and radius. Suppose that air is being pumped into a spherical balloon at a rate of 8 in.3/min. At what rate is the radius of the balloon increasing when the radius is 7 in.?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: E
Mathematics
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Express as a sum, difference, and product of logarithms, without using exponents.logb 
A. 
logb x + 
logb y - 4logb z
B. 
logb x - 
logb x + 4logb z
C. 
logb x3 + logb y7 - logb z8
D. 
logb x + 7logb y - 8logbz
Mathematics
Change the following mixed number to a fraction in the form 
, where a and b are integers and b ? 0.3
A. 
B. 
C. 
D. 
Mathematics
Use the formulas 
= 
, 
= 
, and 
= 
2 to find the sum.
A. 18,120 B. 1360 C. 14,520 D. 5440
Mathematics
Tell whether the expression is a monomial. If it is, name the variable(s) and coefficient, and give the degree of the monomial.
A. Monomial; variables x, y; coefficient 6; degree 2 B. Monomial; variables x, y; coefficient 6; degree 1 C. Monomial; variables x, y; coefficient 6; degree -2 D. Not a monomial
Mathematics