the average rainfall, in inches, in December is 4.15 inch . Correct option C. 4.15 .
Step-by-step explanation:
Here we have , In Pensacola, Florida, the average rainfall in the month of July is 7.40 inches. By October, the average rainfall decreases by 35%. By December, the average rainfall drops another 0.66 inches. We need to find the average rainfall, in inches, in December .Let's find out:
In July , rainfall was 7.40 inches . By October, the average rainfall decreases by 35% i.e.
⇒ [tex]7.4 - \frac{7.4(35)}{100}[/tex]
⇒ [tex]7.4 - 0.074(35)[/tex]
⇒ [tex]7.4 - 2.59[/tex]
⇒ [tex]4.81[/tex]
By December, the average rainfall drops another 0.66 inches i.e.
⇒ [tex]4.81-0.66[/tex]
⇒ [tex]4.15[/tex]
Therefore, the average rainfall, in inches, in December is 4.15 inch . Correct option C. 4.15 .
