Which method should be used to solve the system? Explain your answer, including a description of the first step. x2 + 8y2 = 25-7x2 - 5y2 = 100
What will be an ideal response?
Either method may be used. Elimination may be used since the equations have the same types of terms (x2, y2, constant). If elimination is used, then the first equation should be multiplied by -7 or 7. Substitution may be used efficiently, since a coefficient of the first equation is 1. If substitution is used, then the first equation should be solved for x2.
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Provide an appropriate response.If an equation has fractions as coefficients, what step will make work easier?
What will be an ideal response?
Graph the polynomial function. f(x) = x3 + 5x2 - x - 5
A. 
B. 
C. 
D. 
Find the domain of the rational function.f(x) = 
A. {x|x ? 1, x ? 2, x ? -6} B. all real numbers C. {x|x ? -1, x ? -2} D. {x|x ? 1, x ? 2}
Graph the solution set of the system of inequalities or indicate that the system has no solution.-x + 2y < 10x ? 1
A. 
B. 
C. 
D. 