Proportions/Percents
12
What shape should a linear function form when graphed?
A straight line
Evaluate 9-2
1/81
Find the GCF of 12 and 16
12: 1,2,3,4,6,12
16: 1,2,4,8,16
GCF = 4
What is the probability of rolling a 6 on a 6-sided die?
P = 1/6
27 is what percent of 9?
300%
Find the slope of the line passing through (5,-7) and (6,-4)
m = 3
Simplify x6 x3
x9
Factor 9x2 + 6x
3x(3x + 2)
P = 4/52 or 1/13
Solve the proportion
3/9 = 5/x
x = 15
Rewrite 6x + 2y = 10 in slope-intercept form and graph.
y = -3x + 5
Perform the indicated operation
(4x3 + 2x) + (8x3 - 5x + 4)
12x3 - 3x + 4
(x + 2)(x + 6)
From a group of 3 girls and 6 boys, two will be chosen to attend a conference. What is the probability that the first person will be a boy and the second person will be a girl?
P = 6/9 x 3/8 = 1/4
Amy earned $25 after babysitting for 3 hours. If she always charges the same rate, how much will she make after working 7 hours?
25/3 = x/7
x = $58.33
Write the equation of the line that passes through the points (1,4) and (3,8) in slope-intercept form.
y = 2x + 2
Perform the indicated operation
(x + 4)(x - 3)
FOIL
x2 + x - 12
Factor x2 - 6x + 8
(x - 4)(x - 2)
Find the mean, median, mode and range from the set of data.
6, 8, 9, 10, 6, 9, 9, 8
Mean = 8.125
Median = 8.5
Mode = 9
Range = 4
A flagpole casts a shadow that is 75 feet long. A person that is 6 feet tall casts a shadow that is 9 feet long. How tall is the flagpole?
x/75 = 6/9
x = 50 feet
Write the equation of the line that is perpendicular to the line y = 2x + 5 and passes through the point (2,-1).
y = -1/2x
Simplify (20x2y5 / 5xy3)2
16x2y4
Factor x2 - 8x - 20
(x - 10)(x + 2)
Find the first quartile, second quartile, third quartile, and interquartile range for the set of data.
2, 4, 7, 8, 9, 12, 13
Q1 = 4
Q2(median) = 8
Q3 = 12
IQR = 12-4 = 8