Simplify the expression. If the expression contains any variables, assume that they represent positive real numbers. Write your answer with only positive exponents.
A. x27
B. x21
C. 
D. 
Answer: D
Mathematics
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Graph. Label any intercepts and determine the slope of the line. If the slope is undefined, state this.y = 7
A. y-intercept: (0, 7), m: 0
B. y-intercept: (0, 0), m: 7
C. y-intercept: (0, 0), m: 
D. y-intercept: (7, 0), m: undefined
Mathematics
Rewrite as a fraction.
%
A. 
B. 
C. 
D. 
Mathematics
Add or subtract. Simplify your answer to lowest terms.
- 
A. 
B. 
C. 
D. 
Mathematics
Find the numerical value of the expression for 
and 
x + 7
A. a) 3 b) 11 B. a) 11 b) 25 C. a) 25 b) 11 D. a) 28 b) 126
Mathematics