Question

Elena family is driving on the freeway at 55 miles per hour.Andre's family is driving on the same freeway but not a constant speed.The table shows how far andre's family has traveled, d,on miles,every minute for 10 minutes.how many miles per minute is 55 miles per hour?who had traveled father after 5 minutes?After 10 minutes?How long did it take elena's family to travel as far as andre's family had traveled after 8 minutes?

Answer 1

-55 miles per hour represents 0.92 miles per minute (dividing 55 miles by 60 minutes).

-After 5 minutes:

- Elena's family had traveled 0.92 miles per minute*5 minutes = 4.6 miles

- Andre's family had traveled 5.1 miles

Therefore, Andre's family had traveled farther after 5 minutes

- After 10 minutes:

- Elena's family had traveled 0.92miles per minute*10 minutes= 9.2 miles

- Andre's family had traveled 9.1 miles

Therefore, Elena's family had traveled farther after 10 minutes

- To solve the final question we formulate the following equation:

0.92 miles/minute * x (time traveled by Elena's family) = 7.4 (distance traveled

by andre's family after 8 minutes)

Isolating x, we have:

x = 7.4 / 0.92

x= 8.04

Elena's family took 8.04 minutes to travel as far as andre's family had traveled after 8 minutes.