For the given functions f and g, find the requested function and state its domain.f(x) = 5x - 7; g(x) = 3x - 2Find f - g.
A. (f - g)(x) = 2x - 9; {x|x ? 
}
B. (f - g)(x) = 2x - 5; all real numbers
C. (f - g)(x) = 8x - 9; {x|x ? 1}
D. (f - g)(x) = -2x + 5; all real numbers
Answer: B
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Factor any difference of two squares, or state that the polynomial is prime. Assume any variable exponents represent whole numbers.81 - 4y2
A. (9 - 2y)2 B. (9 + 2y)(9 - 2y) C. (9 + 2y)2 D. prime
Add.
A. 19.87 B. 18.87 C. 19.97 D. 18.97
Solve the problem.Select the correct statement for the definition of the limit: 
f(x) = L means that __________________
A. if given any number ? > 0, there exists a number ? > 0, such that for all x,
0 < 
< ? implies 
< ?.
B. if given any number ? > 0, there exists a number ? > 0, such that for all x,
0 < 
< ? implies 
> ?.
C. if given any number ? > 0, there exists a number ? > 0, such that for all x,
0 < 
< ? implies 
< ?.
D. if given a number ? > 0, there exists a number ? > 0, such that for all x,
0 < 
< ? implies 
> ?.
Solve the problem.A wheel is rotating at 2 radians/sec, and the wheel has a 47-inch diameter. To the nearest foot, what is the speed of a point on the rim in ft/min?
A. 225 ft/min B. 240 ft/min C. 235 ft/min D. 230 ft/min