Solve the problem.Carole's car averages 14.7 miles per gallon in city driving and 22.3 miles per gallon in highway driving. If she drove a total of 347.2 miles on 20 gallons of gas, how many of the gallons were used for city driving?

A. 12 gallons
B. 15 gallons
C. 7 gallons
D. 13 gallons


Answer: D

Mathematics

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Factor the polynomial f(x). Then solve the equation f(x) = 0.f(x) = x4 + 2x3 - 19x2 - 8x + 60

A. (x - 2)(x + 2)(x + 3)(x - 5); -2, 2, 3, -5 B. (x - 2)(x + 2)(x - 3)(x + 5); -2, 2, -3, 5 C. (x - 2)(x + 2)(x - 3)(x - 5); 2, -2, 3, 5 D. (x - 2)(x + 2)(x - 3)(x + 5); 2, -2, 3, -5

Mathematics

Solve the problem using inductive reasoning.Find the number of games played in a round robin tournament for the given numbers of teams. In a round robin tournament every team plays every other team once. 

What will be an ideal response?

Mathematics

Solve the problem.Brandy's Gift House pays employees for each gift they gift wrap. Assume they are paid as follows:1-10 gifts$3.00 each11-15 gifts$3.75 each16 or more gifts$4.50 eachIf Lee wraps 13 gifts, what are her gross earnings?

A. $43.50 B. $41.25 C. $48.75 D. $39.00

Mathematics

Solve the problem.The linear equation y = 229x + 6320 provides an approximation of the annual cost (in dollars) to rent an apartment at the Leisure Village Retirement Community, where x = 1 represents 2011, x = 2 represents 2012, and so on. Write an equation that yields the same y-values when the exact year number is entered.

A. y = 229(2010 - x) + 6320 B. y = 229(2011 - x) + 6320 C. y = 229(x - 2011) + 6320 D. y = 229(x - 2010) + 6320

Mathematics