Assume that in October of a particular year about 215 billion text messages were sent or received in the US, and the prediction is that in the next month it will be a 13% increase. About how many will be sent or received in November of the same year? Rounded to the nearest tenth of a billion.

Answer:There will be [tex]243[/tex] billion messages sent or received in November.Step-by-step explanation:Given.Number of text messages sent or received [tex]=215[/tex] billion.Increment on the very next month [tex]=13\%=\frac{13}{100}=0.13[/tex]Lets find what is [tex]13\%\ of\ 215[/tex]  ⇒[tex]13\%\ of\ 215[/tex]  ⇒[tex]0.13\times 215=27.95[/tex]So we will add this value to our previous months data.Now Number of text messages sent in the month of November [tex]=(27.5+215)=242.95[/tex] billion.Rounding to the nearest tenth the answer will be [tex]243[/tex] billion.So [tex]243[/tex] billion text messages were sent or received in November.