Ben also participated. He fell down midway, and had to walk part of the distance. Still, he finished the distance! It took him exactly 30 minutes though. Chapter Reference a What was Ben’s average speed?

0.56 m/s

Step-by-step explanation:

The average speed of a body tells how fast is the body moving; it is calculated as:

where

d is the distance covered

t is the time elapsed

In this problem, we don't know the distance covered by Ben. Therefore, we will assume that it is 1 km:

d = 1 km = 1000 m

The time elapsed to cover this distance is:

Therefore, Ben's average speed is:

the answer would be the last one (constat) she stays at the same rat every two mintues it goes up by 0.4

step-by-step explanation:

the correct answer is x/3+10≥32

hope this !