A training program requires a pilot to fly circuits of an airfield. Each day, the pilot flies three more circuits than the previous day. On the fifth day, the pilot flew 14 circuits. How many circuits did the pilot fly:
a. on the first day?
b. in total by the end of the fifth day?
c. in total by the end of the nth day?
+639 Day 5, 14 circuits
day 4, 11 circuits (3 less)
day 3, 8 circuits
day 2, 5 circuits
day 1, 2 circuits
The first day he flew 2 circuits.
Total = 14 + 11 + 8 + 5 + 2 = 40 circuits
on the nth day he will fly (3n+2) circuits.
