Evaluate the expression.80
A. 0
B. 8
C. 1
D. -1
Answer: C
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Find the following. Assume that letters can represent any real number.
A. 
B. 
C. 2a + b
D. 
State the domain of the rational function.f(x) = 
A. (-?, - 2) ? (- 2, 2) ? (2, ?) B. (-?, 2) ? (2, ?) C. (-?, 5) ? (5, ?) D. (-?, - 5) ? (- 5, 5) ? (5, ?)
Add or subtract and write answer in lowest terms.
- 
A. 
B. 
C. 
D. 
Translate the problem situation to a system of equations. Do not attempt to solve.Anne has 18 coins in her pocket consisting of nickels and dimes only. The total value of the coins is $1.15. How many nickels and how many dimes does she have? (Let x represent the number of nickels and y represent the number of dimes.)
A. x + y = 18, 0.05x + 0.1y = 115 B. x + y = 18, 5x + 5y = 115 C. x + y = 18, 5x + 10y = 115 D. x + y = 18, 5x + 10y = 1.15