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4<br />

23 ( ) <br />

<br />

∑<br />

= 0<br />

<br />

<br />

<br />

<br />

Math Applications<br />

Solutions and Notes<br />

b. 0.68(9) = $6.12<br />

8. a. 2(3) 0 = 2(1) = 2<br />

4<br />

b. 23 ( ) n<br />

n= 0<br />

250 <br />

<br />

242<br />

<br />

7. a. For each 1 cent change<br />

in earnings per share, the<br />

closing share price changes<br />

0.68. The expression is<br />

0.68x.<br />

∑ = 2(3) 0 + 2(3) 1 +<br />

2(3) 2 + 2(3) 3 + 2(3) 4 = 2<br />

+ 6 + 18 + 54 + 162 =<br />

242<br />

c. total ratings = 242 + =<br />

250<br />

no; Misty has a 242<br />

250 =<br />

96.8% positive feedback<br />

rating, which is less than<br />

98%.<br />

Math Applications 425

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