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Mathematics 21 Online
OpenStudy (anonymous):

A tree 7 ft tall grows an average of 6 in. each year. Which equation models the tree’s height h after x years h = 6x + 7 h = 0.5x + 7 h = - 0.5x +7 h + -6x +7

OpenStudy (anonymous):

@DanJS

OpenStudy (danjs):

x is the time in years When at zero years how tall is the tree?

OpenStudy (danjs):

In other words,How tall was the tree initially?

OpenStudy (anonymous):

I don't get it >.<

OpenStudy (danjs):

The tree started at what height?

OpenStudy (anonymous):

oh 7ft

OpenStudy (anonymous):

@DanJS

OpenStudy (anonymous):

h=6x+7 in which x is the number of years

OpenStudy (danjs):

no

OpenStudy (danjs):

the height is measured in feet, and the growth is measured in inches

OpenStudy (danjs):

how many feet is 6 inches?

OpenStudy (anonymous):

hm..

OpenStudy (danjs):

\[\frac{ 6 inch }{ 1 }*\frac{ 1 ft }{ 6 inches } = 0.5~~ft\]

OpenStudy (samara8954):

help me @DanJS

OpenStudy (danjs):

The growth will be 0.5 ft per year x

OpenStudy (danjs):

and the initial height is 7 feet when x=0

OpenStudy (danjs):

h = 0.5x + 7

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