Ch. 7 Quiz Review (7.1-7.4) Name:_______________________________________________________________________________________Period:______ 1) Condense each expression using the properties of logarithms 1
a) log(4) + log(5)
b) log(5) − log(𝑥)
c) 5 log(𝑚) − 3log(𝑛)
d) 2 log(8) + log(𝑥) − log(10)
2
2) Expand each expression using the properties of logarithms 𝑥2
a) log(10𝑥)
b)
log (
c) log 4 𝑥 2 𝑦 3
d)
log (
100
)
𝑚2 𝑛 4
)
3) Use the change of base formula to evaluate each logarithm on the calculator. Round to 3 decimal places. a) log 3 5
b)
log 4 12
4) Write each equation in exponential form a) log 3 27 = 3
1
b) log 2 32 = 5
c) log 2 ( ) = −3 8
5) Write each equation in logarithmic form a) 62 = 36
b) 24 = 16
c) 641/2 = 8
6) Evaluate each logarithm without using a calculator. log 3 9
log 2 (8)
log 100
log 4 (
7) Evaluate each logarithm without using a calculator. Show your work. log 4 8
log 27 9
log16 32
1 ) 16
8) Write an exponential function for each situation. Then find the value of each function after 5 years. a)
A baseball card bought for $50 increases in 3% in value each year.
b)
A $12,500 car depreciates 9% each year.
9) Write an exponential for each table a)
x y
0 10
1 20
2 40
b)
3 80
x y
0 270
1 90
2 30
3 10
10) Complete the table below Equation
Starting Value
Growth or Decay?
increase Percent { decrease
Growth/Decay Factor
Y = 2(1.4)x Y = 3(0.25)x Y = 1.01x Y = 15(0.8)x
11) Graph the following functions. Describe the domain, range, and write the equation for the asymptote. 𝑦 = 3𝑥
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