+593 Mercedes rides her bike 10 miles in the first week. She increases the distance she rides by 2 miles each week.
How many miles will she ride over the course of 8 weeks?
Mercedes rides her bike 10 miles in the first week. She increases the distance she rides by 2 miles each week.
How many miles will she ride over the course of 8 weeks?
Sum them all up as an Arithmetic Series:
Sum =N/2 [2F + (N - 1)*D]
Sum =8/2 [2*10 + (8 - 1)*2]
Sum =4 [20 + (7*2)]
Sum =4 [20 + 14]
Sum =4 x 34
Sum = 136 miles - that Mercedes will ride over 8 weeks.
