Exponential Growth& decay
Evaluating Logs
Change Base
Log Properties
100

f(X)=1/2*5x

b>1 (Growth)

100

Log7 49

7x=49

x=2

100

log16 64

Log 64/ log 16

100

log3 9=2

32=9

200

f(x)=(4/7)x+2

b<1 (decay)

200

log16

(2) 164

200

log2 4

log4/ log2 

200

log6 2=0

60=2

300
f(x)=(5/9)x

b>1 decay

300

log6 1/216

3
300

log10 294

Log 294/ log 10 

300

log8 16=4

84=16

400

f(x)=(5/4)x

b>1 (growth)
400

Log6 36

2

400

log6 1/36

Log 6 log36

400

44=1/18

log4 1/18=4

500

f(x)=2*(4/7)x

(decay) d<1

500

log7 1/46

-2

500

log4 136

log 136/ log 4

500

4-3=1/6

log4 1/6=-3