Solve using the substitution method. Use a graphing calculator to check your answer. 5x + 3y = 173x + 7y = 57
A. (2, 9)
B. (-4, 18)
C. (-2, 9)
D. No solution
Answer: C
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Translate the phrase into a mathematical expression and then find the result.91 cups decreased by 26 cups
A. 91 - 26; 65 cups B. 91 - 26; 55 cups C. 91 + 26; 107 cups D. 91 + 26; 117 cups
Solve the problem.Consider the generic weighted voting system 
. Which of the following mathematical statements is equivalent to saying that P1 has veto power?
A. w1 > q B. w1 ? q C. w2 + w3 + . . . + wN < q and w1 < q D. w1 > w2 E. none of these
The following chart shows some figures from an income statement. Prepare a vertical analysis by expressing each item as a percent of net sales. Round percents to the nearest tenth of a percent. 
A. 65.5%, 11.3%, 49.2%, 15.5% B. 65.5%, 11.3%, 5.6%, 15.5% C. 65.5%, 11.5%, 8.5%, 23.6% D. 65.5%, 17.2%, 8.5%, 23.6%
Solve the inequality. Describe the solution set using inequality notation.2x + 6 < 14
A. x ? 4 B. x ? 4 C. x > 4 D. x < 4