1. Review Evaluate the expression 9-2 x 120
Rewrite with positive exponents
(2x3y-8)-3

2. 8.3 division property of exponents

3. Notes Quotient of powers Power of a quotient Am / an = a m-n
A can’t be 0
Ex: 37 / 35 = = 32
Power of a quotient
(a/b)m = am/bm
B can’t be 0
Ex: (4/5)3 = 43/53

4. Use the quotient of powers property - T
42/4
83/ 85
(-2)3 / (-2)
53 / 55

5. Use quotient of powers property - ST
c4/ c6
x7/x3
a10 / a5
-(m4) / m4

6. Using power of a quotient property - t
(7/4)-3 (1/2)4

7. Use power of a quotient - st
(3/m)3 (x2/5)2 (3/4)-3
(3/4)2 (a3/b2)4 (1/2)-2

8. Simplify the expression - t
a12 x 1/a3 (t3)2 / (t2)3 2a2b x 9ab2 3a b4
(y3/y5)-2 (x5/x3)-1 (2x/y2)4

9. Simplify the expression - St
x7/x2 (2z)4/3z2 (2/x)6
(2a2b/2ab3)2 a5 x 1/a8 m4 x m2 / m7

10. Word Problem - T
The number of shares N (in billions) listed on the New York Stock Exchange from 1977 through 1997 can be modeled by: N = x (1.112)t Where T = 0 represents Find the ratio of shares listed in 1997 to the shares of 1977.

11. Word Problem - ST
The average salary of a professional baseball player in the U.S. can be approximated by: Y = 283(1.2)t Where T=0 and represents the year Using the approximation, find the ratio of an average salary in 1988 to average salary in 1994.

12. Wrap up
Questions/Comments Hw: Text pg. 466, #’s: evens, 54