# MA 105 Week 7 Assignment 20/20 Correct Answers

## MA 105 Week 7 Assignment 20/20 Correct Answers

MA 105 Week 7 Assignment 20/20 Correct Answers

QUESTION 1

Evaluate the function at the indicated value of x. Round your result to three decimal places.
Function: f(x) = 0.5x Value: x = 1.7

-0.308
1.7
0.308
0.5
-1.7

QUESTION 2

Match the graph with its exponential function.

y = 2-x – 3
y = -2x + 3
y = 2x + 3
y = 2x – 3
y = -2x – 3

QUESTION 3

Select the graph of the function.
f(x) = 5x-1

QUESTION 4

Evaluate the function at the indicated value of x. Round your result to three decimal places.
Function: f(x) = 500e0.05x Value: x=17

1169.823
1369.823
1569.823
1269.823
1469.823

QUESTION 5
Use the One-to-One property to solve the equation for x.
e3x+5 = 36

x = –1/3
x2 = 6
x = -3
x = 1/3
x = 3

QUESTION 6
Write the logarithmic equation in exponential form.
log8 64 = 2

648 = 2
82 = 16
82 = 88
82 = 64
864 = 2

QUESTION 7
Write the logarithmic equation in exponential form.
log7 343 = 3

7343 = 2
73 = 77
73 = 343
73 = 14
3437 = 2

QUESTION 8
Write the exponential equation in logarithmic form.
43 = 64
log64 4 = 3
log4 64 = 3
log4 64 = -3
log4 3 = 64
log4 64 = 1/3

QUESTION 9
Use the properties of logarithms to simplify the expression.
log20 209
0
–1/9
1/9
-9
9

QUESTION 10
Use the One-to-One property to solve the equation for x.
log2(x+4) = log2 20
19
17
18
16
20

QUESTION 11
Find the exact value of the logarithmic expression.
log6 36
2
6
36
-2
none of these

QUESTION 12
Use the properties of logarithms to expand the expression as a sum, difference, and/or constant multiple of logarithms. (Assume all variables are positive.)
log3 9x

log3 9 x log3 x
log3 9 + log3 x
log3 9 log3...