Provide an appropriate response.Describe two advantages of the substitution method over the graphing method for solving systems of equations.
What will be an ideal response?
The substitution method always yields an exact solution. It might also yield the solution more quickly than the graphing method, particularly when a variable is alone on one side of an equation in the system.
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Perform the operation indicated.
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A. 
B. 
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D. 
Factor the expression completely.867x2 - 432
A. (17x - 12)(51x + 12) B. (51x - 12)(17x + 12) C. 3(17x - 12)(17x + 12) D. (17x - 12)(17x + 12)
Solve the problem.Junior high classes of 30 students each met in the cafeteria to take achievement tests. If exactly 6 students sat at each table and 15 tables were used, how many classes took the tests?
A. 16 classes B. 6 classes C. 3 classes D. 5 classes
Solve the problem. Round dollars to the nearest cent and rates to the nearest tenth of a percent.The Oak House had a markup of $20.13 on an oak table that they sold for $75.99. Find (a) the cost, (b) the markup on cost, and (c) the selling price as a percent of cost.
A. $55.86, 26.5%, 73.5% B. $55.86, 36.0%, 136.0% C. $96.12, 20.9%, 79.1% D. $75.99, 26.5%, 377.5%