Determine whether f is continuous at c.f(x) = 
;c = 1
A. continuous
B. not continuous
Answer: B
Mathematics
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Simplify.8 × 7 - 1
A. 48 B. 57 C. 56 D. 55
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Use a graphing calculator to solve the system.4x + y = 16 x + 3y = -7
A. {(5, -4)} B. {(5, 4)} C. {(3, 4)} D. {(-5, -4)}
Mathematics
Answer the question.If the vertex of the graph of a quadratic function lies in quadrant III and the graph is concave up, how many x-intercepts does the graph have?
A. 2 B. 0 C. 1 D. 3
Mathematics
Refer to the figure below to answer the problem.  FIGURE.png)
Is ?ABC isosceles?
Mathematics