Which method should be used to solve the system? Explain your answer, including a description of the first step.-9x2 + y2 =64-5x2 + 7y2 =4
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 has an absolute value of 1. If substitution is used, then the first equation should be solved for y2.
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Use Jefferson's method to find the apportionment.A small country consists of seven states; there are 160 seats in the legislature that need to be apportioned among the seven states; and the population of each state is shown in the table.
Find the apportionment for state D using Jefferson's method.
A. 23 B. 25 C. 26 D. 24
Use cylindrical coordinates to find the volume of the indicated region.the region bounded below by the xy-plane, laterally by the cylinder 
and above by the plane 
A. 7? B. 196? C. 49? D. 28?
Solve the problem.There are 1231 students registered at Lincoln Community College. 571 of them are men. How many women are registered?
A. 650 women B. 1702 women C. 660 women D. 1802 women
Solve.When Milo got promoted at work, he received a 20% pay raise. He now earns 
per year. What was his annual salary before his raise?
A. $15,360 B. $64,000 C. $12,800 D. $76,800