Hi I need help :( Pls show your working..Will give brainliest for helpful answer

number 10

dy/dx =(dy/dt).(dt/dx)

now find

dy/dt=4t-1. , dt/dx=1

so : dy/dx=(4t-1).(1)

dy/dx= 4t-1 ,we have x=t-3> t=x+3

subtitute at t

dy/dx= 4(x+3)-1=4x+12-1= 4x+11

x -

median = 1.25

range = 12-14.5

interquartile = q12-q14.5

y -

median = 1

range = 15-17

interquartile = q15-q17

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4