Sketch the graph of the equation. Identify the vertex and the intercepts.y = x2 - 9
A. vertex: (0, 9);
x-intercepts: none;
y-intercept: (0, 9)
B. vertex: (0, -9);
x-intercepts: (-3, 0) and (3, 0);
y-intercept: (0, -9)
C. vertex: (0, -9);
x-intercepts: none;
y-intercept: (0, -9)
D. vertex: (-9, 0);
x-intercept: (-9, 0) ;
y-intercept: (0, 81)
Answer: B
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Solve the problem using your calculator.The paired data below consist of the costs of advertising (in thousands of dollars) and the number of products sold (in thousands). Use a graphing calculator to model the data with a linear function that predicts the number of products sold as a function of the cost of advertising.
A. y = 55.8 + 2.79x B. y = 26.4 + 1.42x C. y = 55.8 - 2.79x D. y = -26.4 - 1.42x
Write the sum in summation notation.7 + 
+ 
+ 
+ . . . + 
A. 
B. 
C. 
D. 
Answer the question or solve the problem.If a ? b, is it always true that a2 ? b2? Explain.
What will be an ideal response?
Rewrite without rational exponents, and simplify, if possible.m4/3
A. 
B. 
C. 
D. 