Find f-1(x) for the following one-to-one function f.f(x) = x + 3
A. f-1(x) = x - 3
B. f-1(x) = 3 - x
C. f-1(x) = 
D. f-1(x) = -x + 3
Answer: A
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Use set-builder notation to write the set.{-10, -9, -8, -7, -6}
A. {x 
is a number between -10 and -6}
B. {x 
is a natural number greater than -11 and less than -5}
C. {x 
is an integer greater than -10 and less than -6}
D. {x 
is an integer greater than -11 and less than -5}
Solve the equation.19t - 47 = 7t - 15
A. 
B. - 
C. - 
D. - 
Find the center and radius of the circle.(x + 5)2 + (y + 8)2 = 100
A. (-8, -5); 100 B. (-5, -8); 10 C. (8, 5); 100 D. (5, 8); 10
Solve the problem.A person with no more than $2000 to invest plans to place the money in two investments, telecommunications and pharmaceuticals. The telecommunications investment is to be no more than 5 times the pharmaceuticals investment. Write a system of inequalities to describe the situation. Let 
to be invested in telecommunications and 
to be invested in pharmaceuticals.
A. x + y ? 2000 x ? 5y x ? 0 y ? 0 B. x + y ? 2000 5x ? y x ? 0 y ? 0 C. x + y = 2000 y ? 5x x ? 0 y ? 0 D. x + y = 2000 x ? 5y x ? 0 y ? 0