Kris runs half of the distance to school averaging 6mph. he jogs the rest of the way to school averaging 4 mph, and the whole trip takes him 25 minutes. how many minutes will it take him to run the same way home if he averages 8 mph the whole way?

15 minutes.

Step-by-step explanation:

Let x represent the distance from home to school.

Kris runs half of the distance to school averaging 6 mph.

Time = Distance/speed

Time taken to cover the half distance (x/2) at a rate of 6 mph would be:

He jogs the rest of the way to school averaging 4 mph. Time taken to cover the half distance (x/2) at a rate of 4 mph would be: .

Time taken to complete the distance (x) is 25 minutes.

Speed is miles pr hour, so we need to convert time from minutes to hours as:

Using , we will get:

Therefore, the distance between Kris's home and school is 2 miles.

Time = Distance/speed

Therefore, it will take 15 minutes for Kris to reach home.

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

this is false ^.^ lol