Simplify the rational expression.
A. 
B. 
C. 
D. 
Answer: C
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Use the formula for 
to evaluate the expression.
A. 15 B. 1 C. 0 D. 120
Perform the indicated operation.44 ÷ (-4)
A. -11
B. - 
C. -21
D. 11
Solve the problem.The Epson Stylus 850 can print Helen's class project in 24 minutes. The Epson Stylus 500 can print the project in 42 minutes. If the two printers work together, how long would they take to print out the project?
A. 
min
B. 168 min
C. 15
min
D. 11 min
Solve the application problem.Mari works in sales. Her annual income is $33,000 plus 19% commission of her sales. What are the independent and dependent variables in this relation? Is the relation a function?
A. independent: sales, dependent: annual income; no B. independent: annual income, dependent: sales; yes C. independent: sales, dependent: annual income; yes D. independent: annual income, dependent: sales; no