Solutions to MAT 117 Test #2
Because there are two versions of the test, solutions will only be given for Form A. Dierences from the
Form B version will be given. (The values for Form A appear above those of Form B in the curly braces
cfw_ .)
Part I: Answ
5.5 mat 117
1. Express as a single logarithm: Answer:
2. Find the value of the expression. Let
Answer: -1.500
3. Write as the sum and/or difference of logs. Express powers as factors:
Answer:
4. Use the properties of logarithms to find the exact
Solutions to MAT 117 Test #3
Because there are two versions of the test, solutions will only be given for Form A. Dierences from the
Form B version will be given. (The values for Form A appear above those of Form B in the curly braces
cfw_ .)
Part I: Answ
MAT 117
Test Review 1
Hao Liu
Test Review 1
I. Find the domain of each function and write you answer using interval notation.
(a) f (x) = x2 + 2x + 1
(, )
(b) f (x) = |x|
(, )
x2 + 1
x3
(, 3) (3, )
(d) f (x) = x + 1
[1, )
(c) f (x) =
II. ALGEBRAICALLY det
P.2 R1 Real Numbers Real numbers- rational- natural, whole, integers, fractions/decimals, radicals Irrational-pie square roots 0=0/x=0 1=1/1=1 2=2/2=2 Imaginary numbers- I or square root -2 or square root -3 never ends and never repeats pie=3.1444444
Carlton Ashley
MAT 117
Objective 3, Set C
Problem Set 3
1. Solve the following equations for the variable x. Report your answer as a fraction
or integer.
3x+2 5 = 8
3x+2 5+5 = 8+5
(3x+2 5 = 8)2 =132
3x+2=169
3x+2-2=169-2
3x=167
x = 167/
MAT 117
Carlton Ashley
Problem Set 2
1. Joe rides his bicycle an average of 18 mph. The distance Joe rides d (t) (in mi) is
given by d (t) =18t, where t is the time in hours that he rides.
A. Evaluate d (3) and interpret its meaning.
d (t) = 18t
d (3) = 1
MAT 117
Quiz Review 2
Hao Liu
Quiz Review 2
Suppose f (x) = 2x4 + x3 7x2 3x + 3. Answer the following questions.
(a) Use Descartes Rule of Signs to determine how many positive and negative zeros
f (x) may have.
f (x) = 2x4 x3 7x2 + 3x + 3
V (f (x) = 2,V (
MAT 117
Quiz Review 3
Hao Liu
Quiz Review 3
1
and g(x) = x 2. Find (f g)(x) and its domain.
x1
1
(f g)(x) = f (g(x) =
x21
Domain of f : cfw_x|x = 1
Domain of g: cfw_x|x 2
(a) Let f (x) =
Domain of f g : = cfw_x|x in domain of g and g(x) in domain of f
=
Solutions to MAT 117 Test #2
Because there are two versions of the test, solutions will only be given for Form C. Dierences from the
Form D version will be given. (The values for Form C appear above those of Form D in the brackets.)
2t2
t2
1. For the fu
Solutions to MAT 117 Test #1
Because there are two versions of the test, solutions will only be given for Form A. Dierences from the
Form B version will be given. (The values for Form A appear above those of Form B in the curly braces
cfw_ .)
1. Consider
Mat 117 Carlton Ashley
Problem Set 1
1. Helene considers two jobs. One pays $45,000 per year with an anticipated yearly raise of
$2,250. A second job pays $48,000 per year with yearly raises averaging $2,000.
A. Write a model representing the salary S1 (