Last year austin, texas received 23.5 inches pf rainfall. this year austin received 21.2 inches of rainfall. find the percent of decrease in the number of inches in rainfall. round your answer to the nearest tenth of a percent, if necessary.
a. 2.3%
b. 9.8%
c. 10.8%
d. 13.6%

B. 9.8%

Step-by-step explanation:

Hi, to answer this question we have to use proportions

since 23.5 is the 100% = 23.5 inches /100 %

For 21.2 inches =21.2inches /x%

23.5/100 =21.2/x

Solving for x:

x = 21.2 / (23.5/100)

x = 90.2%

21.1 inches are 90.2% of 23.5 inches.

So, the percent decrease is:

100% - 90.21 % = 9.8 %

Feel free to ask for more if needed or if you did not understand something.

the red lines denote the population of the bacteria after 35 hours. that would be 2,409.24. the y-intercept is the blue line which is 800 because that is the starting point. the equation used to make the graph is 800(1.032)^h, where h is the number of hours.

step-by-step explanation: