Friday, 3/4/11 CP Algebra

Students took a quiz over Targets 5, 6,7…

 

1. increasing, (0, 3)

2. decreasing (0, 20)

3.  increasing (0, 3)

4. decreasing (0, 6)

5.  (-2, 800), (-1, 200), (0, 50), (1, 12.5), (2, 3.25)

6.  y = 2500(1.06)^8 = $3,984.62

7.  y = 18500 ( .83)^9 = $4,166.74       

        why .83?  17% decrease 100% – 17% =  83% remains, thus .83!

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