Chapter 1
Distribute 8(6 + x).
8x + 48
Solve x + 12 = 19
x = 7
Solve 10x > 84
x > 8.4
Evaluate g(x) = 1.5x + 1 when x = 7.
g(7) = 11.5
Give one method of finding slope.
m = change in y over change in x
m = rise over run
m = (y_2 - y_1)/(x_2 - x_1)
What is -34?
-81
What is 0.5% of 20?
0.1
Solve z - 7.3 ≥ 4.1
z ≥ 11.4
What is the domain of this set {(-1, 2), (-2, 4), (2, 5), (0, -2), (2, 0)?
D: {-2, -1, 0, 2}
Write an equation in slope-intercept form with slope = -5/4 and y-intercept = 22
y = -5/4 x + 22
What is the value of 2 - [1 - (2 - 1)].
2
If -2x + 4 = 5 - 3x, then x = ?
x = 1
Solve the compound inequality 4 ≤ d - 2 < 5.
6 ≤ d < 7
Evaluate f(x) = -3 - x when x = -7?
f(-7) = 4
m = 15/4 = 3 3/4
The side length of a square s can be determined by the formula s = sqrt(A) where A represents the area of the square. What is the side length of a square with area 0.09 square meter?
0.3 meters
A movie theater makes 30% of its revenue from concession sales. If concession sales were $174,000, what was the total revenue?
$580,000
Solve the inequality -2(c - 3) > 4.
c < 1
The soccer team is ordering new uniforms. There is a one-time setup charge of $50.00, and each uniform costs $23.50. Write an equation that best describes the total cost C for ordering uniforms for p players. (Hint: start with "C =")
C = 23.50p + 50
What are the x- and y-intercepts of the function y - 2x = 4?
x-int: (-2, 0)
y-int: (0, 4)
A clothing store opens with 75 pairs of jeans on a sale table. By noon, 10 pairs have been sold. As of 2:00, another 8 pairs have been sold. A clerk then restocks with 12 pairs. Receipts show that 18 pairs of jeans were sold after 2:00. How many pairs of jeans are left at the end of the day?
51 jeans
If x - 3 = 4 - 2(x + 5), then x = ?
x = -1
For what integer value of x is 2x - 9 < 5 and x - 1 > 4?
x = 6
Evaluate h(x) = 0.5(5 - 6x) + 9x when x = 2/3.
h(2/3) = 13/2 = 6.5
Write an equation in slope-intercept form of a line that goes through (-2, 5) perpendicular to y = -2x + 4.
y = 1/2 x + 6