Transcript of Chapter 8 Slide the Eraser. Question 1 write the following using exponents? 7 · 7 2 · 2 · 2 x ·...
Chapter 8 Slide the Eraser
Question 1
• write the following using exponents?
7 · 7
2 · 2 · 2
x · x · x· x · x· x · x
Question 2
Question 3
Question 4
5
34
23
))(3
))(2
)1
ab
y
nn
Question 5
32
2
3
25
43
)5
4 )4
2 )3
777 )2
)1
ba
b
xy
pp
Question 6
Question 7
Question 8
Question 9
45
8
208
3
62
3
7
)3
x
1 5)
4 )2
4
2 4)
3
3 )1
xx
x
xx
Question 10:
3
58
2
2
3
10
7
yx
yx
b
b
• a) 2.834 x 102
• c) 7.8 x 10-1
• b) 4.9 x 105
• d) 1.23 x 10-6
• a) 34,690
• c) 0.039
• e) 5,600,000,000
• b) 1.78
• d) 0.00072
• a) (1.4 x 104)(7.6 x 106)
• c) (4.0 x 10-2)3
• b) 4
1
108.4
102.1
Graphing Exponential Functions
• Make a table of values for t the function y = 5x
x y
-2
-1
0
1
2
Graphing Exponential Functions• Make a table of values for t the function
y = (1/3)x
x y
-2
-1
0
1
2
• You deposit $500 in an account that pays 8% annual interest compounded yearly. What is the account balance after 6 years?
C= 500
r = .08
t = 6
y = 500(1+.08)6
• You bought a used car for $18,000. The value of the car will be less each year because of depreciation. The car depreciates at the rate of 12% per year.
• a) Write an exponential decay model to represent this situation.