Graph the system of inequalities and the points of intersection of the graphs. Label the points of intersection with their coordinates.x2 + y2 ? 25 2y < x + 5
A. 
B. 
C. 
D. 
Answer: D
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Tell whether a linear model or a quadratic model is appropriate for the data. If linear, tell whether the slope should be positive or negative. If quadratic, decide whether the leading coefficient a of x2 should be positive or negative.The amount of sales tax paid as a function of the sales price.
A. linear; negative B. quadratic; positive C. linear; positive D. quadratic; negative
Solve the system by the substitution method.
A. (7, -5), (-7, 5) B. (7, 5), (-7, -5) C. (7, -5) D. (7, -5), (-7, -5)
Solve.a - 7 ? -1
A. a ? -6 B. a ? 8 C. a ? 6 D. a ? -8
Perform the indicated operations. Write the resulting polynomial in standard form.(6x2 + 4x + 7) + (2x2 + 8x + 4) - (5x + 2)
A. 6x2 + 7x + 9 B. 6x2 + 7x + 13 C. 8x2 + 7x + 9 D. 8x2 + 7x + 13