Algebra Review 207

What is the value of x in the equation below?

3x – 10x + 5 = 5x + 17

• x= 6

• x= -6

• x= -11/6

• x= -1

What is the solution to 0.3(12x - 16) = 0.4(12 - 3x)?

• x= -2

• x= 4

• x= 2

• x= -4

The expenses for the homecoming

dance were $1,800. The class members sold 279 tickets and made a profit of $3,450. If x represents the price of each ticket sold, which equation could be used to find x?

• 279x + 1,800 = 3,450

• 1,800 – 279x = 3,450

• 279x – 1,800 = 3,450

• 1,800x + 279x = 3,450

General admission to the State Fair of Texas is $16.00. For guests to ride the various rides, they must use coupons that cost $0.50 each. The number of coupons needed for each ride varies. The representative function for the situation is C(x) = 0.5x + 16, where C(x) represents total cost as a function of the number of coupons, x. What is the domain for visiting and riding rides at the State Fair of Texas?

• x ≥ 0, where x is an integer

• x ≥ 0, x is non-negative

• x is all real numbers

• x ≥ $16.00

• {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, discrete

• {0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100}, discrete

• 0 ≤ x ≤ 100, continuous

• 0 ≤ x ≤ 10, continuous

• y = 13.5x – 1.25

• y = 13.5x + 12.25

• y = 5.5x + 6.75

• y = 6.75x + 5.5

The slope of the line that passes through the points (−6, w) and (−10, 4) is 1/8. What is the value of w?

• 36

• 34

• 9/2

• 1/2

What is the zero of r(x) = (8/3)x - 16 ?

• -16

• -6

• 6

• 16