Step-by-step explanation:
The answer is D)
b^10/b^2
= b^10-b^2 = b^8
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Well we don't know the total of students so we divide 283 by 7.Which equals approximately to 41.
Answer:
(1)7 (2)9 (3)6
Step-by-step explanation:

(1)The average rate of change between x=2 and x=5

(2)The average rate of change between x=3 and x=6

(3)The average rate of change between x=2 and x=4

The simpliest way to do this is to turn both fractions into decimals
7/10 goes to 0.7 and 2/5 goes to 0.4
then the equation would be 0.7x + 20 = 0.4
hope I've helped!