1.2 Algebra SAT Practice

In July 2014, County X had 783 miles of paved roads. Starting in 2015, the county has been building 8 miles of new paved roads each year. At this rate, if "n" is the number of years after 2014, which of the following functions, f, gives the number of miles of paved road there will be in County X? (Assume that no paved roads go out of service.) (SAT prep)

• f(n) = 8 + 738n

• f(n) = 2.014 + 783n

• f(n) = 783 + 8n

• f(n) = 2.014 + 8n

To edit a manuscript, Miguel charges $50 for the first 2 hours and $20 per hour after the first 2 hours. Which of the following expresses the amount in dollars, C. Miguel charges if it takes him "x" hours to edit a manuscript, where x>2? (SAT Prep)

• C = 20x

• C = 20x + 10

• C = 20x + 50

• C = 20x + 90

-2(3x - 2.4) = -3(3x - 2.4)

What is the solution to the equation above? (SAT Prep)

• 2.4

• 12

• 0

• 0.8

-2x = 4y + 6

2(2y + 3) = 3x - 5

What is the solution (x, y) to the system of equations above? (SAT Prep)

• (1, -2)

• (-8, -2)

• (5, 1)

• (-1, 2)

A voter registration drive was held in Town Y. The number of voters, V, registered T days after the drive began can be estimated by the equation V=3,450 + 65T. What is the best interpretation of the number 65 in this equation? (SAT Prep)

• The number of registered voters at the beginning of the registration drive

• The number of registered voters at the end of the registration drive

• The total number of voters registered during the drive

• The number of voters registered each day during the drive