The runner's time to complete the marathon was 10% less than the time to complete the last marathon. The runner's time to complete the marathon was of the time to complete the last marathon.

The runner's time to complete the marathon was 90% of the time to complete the last marathon.

Step-by-step explanation:

Given that the runner's time to complete the marathon was 10% less than the time to complete the last marathon.

The amount of time the runner needed this time as compared to the last marathon= 100% - 10%=90%

Hence, the runner's time to complete the marathon was 90% of the time to complete the last marathon.

answer: it's a

step-by-step explanation:

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4