Simplify the expression. Assume that all variables are positive when they appear.10
- 4
+ 9
A. 30
B. -30
C. 24
D. 10
Answer: C
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The function f is one-to-one. State the domain and the range of f and f-1. Write the domain and range in set-builder notation.f(x) = -4x + 5
A. f(x): D = {x|x > -4}, R = {y|y > 5}; f-1(x): D = {x|x < -4}, R = {y|y < 5} B. f(x): D is all real numbers, R = {y|y > 5}; f-1(x): D is all real numbers, R = {y|y < 5} C. f(x): D is all real numbers, R is all real numbers; f-1(x): D is all real numbers, R is all real numbers D. f(x): D = {x|x > -4}, R is all real numbers; f-1(x): D = {x|x < -4}, R is all real numbers
Evaluate the expression.
A. 
B. 
C. 
D. 
Divide and/or multiply as indicated. Simplify and leave the numerator and denominator in your answer in factored form.
÷ 
A. x - 2
B. 
C. 
D. 
Simplify. Assume that all variables represent positive real numbers.
A. 2
B. 4
C. 3
D. 5