Yesterday, carmen went on a bike ride. her average speed was 8
miles per hour. today, she went on another ride, this time averaging 13
miles per hour. in the two days, she biked for a combined total time of 9
hours.
let x
be the number of hours she biked yesterday. write an expression for the combined total number of miles she biked in the two days.

or miles.

Step-by-step explanation:

Let x represent number of hours Carmen biked yesterday.

We have been given that yesterday Carmen's average speed was 8

miles per hour. So distance covered in x hours would be .

We are also told that Carmen biked for a combined total time of 9

hours. So the number of hours biked second day would be . The distance covered in at a speed of 13  miles per hour would be .

Total distance covered by Carmen would be:

Therefore, the total distance covered by Carmen in the two days would be miles.