For problems 13-15 use the given graph of a quadratic function.
Estimate the vertex.
A. 
B. 
C. 
D. 
E. none of these
Answer: B
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
Solve the problem.Find the measures of the supplementary angles.
A. 101.25° and 78.75° B. 50.63° and 39.38° C. 96.25° and 83.75° D. 202.5° and 157.5°
Mathematics
Verify the identity.
= 
What will be an ideal response?
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 
B. 
C. 
D. 
Mathematics