Find each percent change. State if it is an increase or decrease.

9) From 16.6 to 13 i really need thi preferably have a good explanation so i can do it myself next time

21.69% decrease.

Step-by-step explanation:

We want to determine the percent change from 16.6 to 13.

First, since 13 is smaller than 16.6, we know that this is decrease.

Percent change is given by the formula:

The new value is 13 and the old value is 16.6. Substitute:

Evaluate:

Use a calculator:

We ignore the negative because the negative simply tells us that it's decreasing. (Likewise, if the answer's positive, it's an increase.)

In conclusion, the percent change is an approximate 21.69% decrease.

step-by-step explanation:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

step-by-step explanation:

given that megan owns a clothing boutique.

the profits of 2010, 11, are recorded and shown as follows:

years since     2010 0     1     2     3       4       5

profits made in 1000's   39       84     111     120   111     84

we find that profit gradually increases form 2010 to 2013 upto 120,   then starts decreasing.

the profits for 2012 and 2014 are the same while that of 2011 and 2015 are also the same.

this shows that there is symmetry about the line profit = 120000

hence answer is:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

read more on -

c

step-by-step explanation: