Provide an appropriate response.Under what circumstances can a system of equations be solved more easily by graphing than be substitution?
What will be an ideal response?
A system of equations would be solved more easily by graphing than by substitution when there are integer solutions and the substitution method requires extensive computations with fractions.
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Solve the problem.Find the moment of inertia of a flywheel with respect to its axis if its inner radius is 
, its outer radius is 
and its mass is 
See figure.
A. 50 kg?cm2 B. 87 kg?cm2 C. 3000 kg?cm2 D. 170 kg?cm2
Divide and check the quotient.-$70,649 ÷ 43
A. -$1643 B. -$1653 C. -$1648 D. -$1633
Solve the problem.A sum of money amounting to $3.45 consists of dimes and quarters. If there are 24 coins in all, how many are quarters?
A. 7 quarters B. 17 quarters C. 12 quarters D. 19 quarters
Answer the question.Let H be the hyperplane through the three points 
, 
, 
. Is the point v = 
on the same side of H as the origin? Justify your answer.
A. Yes, because n ? v < 7. B. No, because n ? v > 3. C. Yes, because n ? v < 3. D. No, because n ? v > 0.