Ezra is training for a track race. he starts by sprinting 100 yards. he gradually increases his distance, adding 5 yards a day for 21 days. which explicit formula models this situation

From formula It is found that on day Ezra will be sprinting 200 yards

Step-by-step explanation:

Let us consider be the sprinting distance for each day where n=1,2,....21

We have given on first day Ezra starts by sprinting 100 yards

Therefore on next day Ezra will be sprinting

=105 yards

on third day

=110 yards

similarly, on day sprinting distance is given as

therefore on day sprinting distance will be

=200 yards

Therefore from this formula It is found that

on day Ezra will be sprinting 200 yards.