A tree 7ft tall grows an average pf 6in each year. which equation models the trees height h after x years?

A) h=0.5x+7

B) h=+-6x+7

C) h=-0.5x+7

D) h=6x + 7

A) h=0.5x+7

Step-by-step explanation:

given

initial height = 7 feet

growth rate = 6 in = 0.5 feet / year

let # of growing years = x

For a linear growth rate:

height after x years, h = initial height + (# of growing years) * (growth rate)

substiuting the values above into this equation

h = 7 feet + (x years) * (0.5 feet/year)

or

h = 7 + 0.5x (rearranging)

h = 0.5x + 7