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Solving Logs
Solving Exponential
Real-life problems
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100
Rewrite in exponential form log
x
191 = y
x
y
= 191
100
logx-log2=log17
x=34
100
9
p
=29
p=1.5325
100
What are the 2 equations for Compound Interest Problems and the half life equation.
A=P(1+r/n)
nt
A=Pe
rt
A=P(1/2)
t/h
100
What French word for sled is given to a Winter Olympic event?
Luge
200
Rewrite in Exponential Form log
2x
(3y-4) = 8x
2x
8x
= 3y-4
200
ln(5-2x)+ln9=4
x=-.5332
200
9*9
k+2
=59
k=-1.1442
200
Sam invests $2000 into a savings account compounded quarterly for 15 years with an APR of 6%. How much money does he yield?
$4886.44
200
How many time zones are in the entire world?
39
300
Rewrite in log form 7
x
= 6y
log
7
6y = x
300
ln5 - ln(4-4x)=ln33
x=.9621
300
10
-9m
+8=34
m=-.1572
300
John invests $8333 in a savings account for 12 years. His APR is 8% compounded semi-annually. How much money does he receive.
$21360.01
300
What symbol of peace surrounds the globe on the UN flag?
The olive branch
400
Rewrite in log form e
3y-5
=37x
ln(37x)=3y-5
400
log
6
(3x
2
-5x)=log
6
(-6+2k
2
)
x={2,3}
400
-5.3e
8x+5
+2.9=-27
x=-.4087
400
Marcy invest $8589 in a retirement account with an APR of 7% compounded continuously. How long will it take her to get $21,337.85?
13 years
400
How many squares are there on a standard Scrabble board?
15 x 15 = 225
500
Rewrite in Exponential form 5log(x) + 5log(y) = z
10
z
=(xy)
5
500
log(x)=12 I want the whole number :)
x=1,000,000,000,000
500
7e
2-3x
+3=92
x=-.1809
500
The half-life of Strontium-90 is 29 years. If you have 10g of Sr-90 how long did it take for it to decay to 1.4777
t = 80 years
500
On a standard deck of cards what is the King of Diamonds holding?
An Axe