Find the least common denominator for the expression.
+ 
A. 60xy3
B. 60x4y3
C. 60x4y2
D. 60xy
Answer: B
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Solve the problem.Water is falling on a surface, wetting a circular area that is expanding at a rate of 
How fast is the radius of the wetted area expanding when the radius is 
(Round your answer to four decimal places.)
A. 0.0279 mm/s B. 71.6283 mm/s C. 0.0140 mm/s D. 0.0877 mm/s
Find all real numbers in the interval [0, 2?) that satisfy the equation.sin2 x - cos2 x = 0
A. 
B. 
C. 
D. 
Find the maximum and minimum values of the function and the values of x and y for which they occur.F = 8x + 12y, subject to40x + 80y ? 560,6x + 8y ? 72,x ? 0,y ? 0.
A. Maximum: 96 when x = 12 and y = 0; minimum: 84 when x = 0 and y = 7 B. Maximum: 96 when x = 12 and y = 0; minimum: 0 when x = 0 and y = 0 C. Maximum: 100 when x = 8 and y = 3; minimum: 0 when x = 0 and y = 0 D. Maximum: 100 when x = 8 and y = 3; minimum: 84 when x = 0 and y = 7
For the given functions f and g, find the requested function and state its domain.f(x) = 6x + 5; g(x) = 4x - 1Find 
.
A. 
(x) = 
; 
? 
B. 
(x) = 
; 
? 
C. 
(x) = 
; 
? 
D. 
(x) = 
; 
? 