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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​

Respuesta :

marcthemathtutor

Answer:

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

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