Item 16 explain why a change from 20 to 40 is a 100% increase, but a change from 40 to 20 is a 50% decrease. increasing 20 to 40 is the same as increasing 20 by . so, it is a 100% increase. decreasing 40 to 20

Increasing 20 to 40 is the same as increasing 20 by 20 (or itself), so it is a 100% increase. Decreasing 40 to 20 is the same as decreasing 40 by 1/2 or by 20. So it is a 50% increase.

Step-by-step explanation:

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.

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