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megansanders215
26.07.2019 •
Mathematics
Plz ! one year after a tree is planted, the tree is 3.5 ft tall. each year, the tree grows 1.5 ft. what function, written in sequence notation, models the height of the tree n years after it is planted? an=1.5n+2 an=3.5n+1.5 an=1.5n+3.5 an=5n+1.5
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Ответ:
Ответ:
A : an=1.5n+2
Step-by-step explanation:
One year after a tree is planted, the tree is 3.5 ft tall. Each year, the tree grows 1.5 ft.
Each year , the tree grows 1.5 ft . It means the tree grows at constant rate.
We use equation y=mx+b
constant rate m = 1.5
we need to find out b
Given : One year after a tree is planted, the tree is 3.5 ft tall.
So when x= 1 , y = 3.5
Plug in the value and find out b, m= 1.5
3.5=1.5(1)+b
Subtract 1.5 on both sides
b= 2
So final equation
an = 1.5x + 2
option A
Ответ:
Gretta = (1 1/2)(1 1/4)
Gretta = (3/2)(5/4)
Gretta = 15/8 mile OR 1 7/8 mile