Factor the trinomial completely.3x5 + 6x4 - 45x3
A. 3x3(x2 + 2x - 15)
B. x3(x + 5)(3x - 9)
C. 3x3(x + 5)(x - 3)
D. x3(3x + 15)(x - 3)
Answer: C
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Solve the problem.Sergio's internet provider charges its customers $15 per month plus 4¢ per minute of on-line usage. Sergio received a bill from the provider covering a 
period and was charged a total of $101.00. How many minutes did he spend on-line during that period? (Round to the nearest whole minute, if necessary.)
A. The number of minutes is 65. B. The number of minutes is 1815. C. The number of minutes is 650. D. The number of minutes is 1565.
Solve the problem.In a certain city, the cost of a taxi ride is computed as follows: There is a fixed charge of $2.05 as soon as you get in the taxi, to which a charge of $1.55 per mile is added. Find an equation that can be used to determine the cost, C(x), of an x-mile taxi ride, and use this equation to find the cost of a 6-mile taxi ride.
A. $11.23 B. $11.35 C. $12.25 D. $11.53
Simplify.81 ? 43
A. 512 B. 32,768 C. 72 D. 96
Use the table to solve the inequality.2x + 6 ? 3 - x
A. {x
2}
B. {x
-1}
C. {x
-2}
D. {x
4}