Answer:
The average number of miles he traveled each day is [tex]20t+5[/tex]
Step-by-step explanation:
In order to calculate the average, we notice that it is a 3-day race, and we have the data of miles traveled each day. Mathematically we are saying that
[tex]A=\frac{1}{3}[20t+15(t+6)+25(t-3)][/tex]
where A is the average we want to calculate, so
[tex]A=\frac{1}{3}(20t+15t+90+25t-75)=\frac{60t}{3}+\frac{15}{3}[/tex]
therefore
[tex]A=20t+5[/tex]
is the average number of miles he traveled each day, wich is the polynomial b.
