Question

On the third example (where we added a garage on the end), we came up with the function an 4n + 4, where n represents the number of houses built. If we build 50 houses with just the one garage on the end, how many fence panels will we need?

Answer 1

The expression is for the fence pannels is

4n+4

n represents the number of houses.

You have to replace n with the given value of houses:

4*50+4=204

For 50 houses you need to use 204 fence pannels.

*-*

an=4n+4

an= number of fence pannels

You have to calculate the number of houses, n, you can build with 84 fence pannels, you have to clear the expression for n:

an= 4n+4

an-4=4n

n=(an-4)/4

n=(84-4)/4

n=20

You can biuld 20 houses with 84 fence pannels.