Y= a child's height in inches, x=years and slope = 3

So probably put it into slope intercept form
y=mx+b
m=slope
we have slope=3 so input
y=3x
tada
bascially we input x or number of yers and get an ouput of height or y

55. i don’t no. but zhongshan

No i refuse to tell you the answer but the estimate is 10