College Algebra Unit I Practice Exam Worksheet With Answer Key Page 2
ADVERTISEMENT
1
2
3
4
5
6
7
8
9
10
11
12Solve the inequality. Write the solution set using interval notation and graph it.
7) 12 - 6x + 7 -7x + 30
7)
A) (-6, )
B) (- , 11]
C) [11, )
D) (- , -6)
Solve the problem.
8) ABC phone company charges $23 per month plus 8¢ per minute of phone calls. XYZ phone
8)
company charges $11 per month plus 11¢ per minute of phone calls. How many minutes of phone
calls in a month make XYZ phone company the better deal?
A) More than 40 minutes
B) More than 400 minutes
C) Less than 400 minutes
D) Less than 40 minutes
Use the given conditions to write an equation for the line in the indicated form.
1
9) Passing through (5, 3) and perpendicular to the line whose equation is y =
x + 3;
9)
2
slope-intercept form
1
13
A) y = - 2x - 13
B) y = 2x - 13
C) y = -
x -
D) y = - 2x + 13
2
2
Find the slope then describe what it means in terms of the rate of change of the dependent variable per unit change in the
independent variable.
10) The linear function f(x) = -6.4x + 22 models the percentage of people, f(x), who eat at fast food
10)
restaurants each week x years after 1998.
A) m = 6.4; the percentage of people eating at fast food restaurants each week has increased at a
rate of 6.4% per year after 1998.
B) m = -6.4; the percentage of people eating at fast food restaurants each week has decreased at
a rate of -6.4% per year after 1998.
C) m = 22; the percentage of people eating at fast food restaurants each week has increased at a
rate of -6.4% per year after 1998.
D) m = 6.4; the percentage of people eating at fast food restaurants each week has increased at a
rate of -6.4% per year after 1998.
2
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education