She will need 288 ft of Christmas lights
Step by Step:
First we find how many feet is needed to go around 1 window. We do this by adding up all four of its sides.
4+4+2+2= 12
Because there are 15 windows be multiply the feet needed for 1 window by 15.
12•15=180
Repeat the first two steps for the garage doors to find that she needs 108ft of lights for 3 garage doors and add the feet needed for the windows to the feet needed for the garages
180+108=288
5 and 6: multiply f(x) by g(x) or in other terms multiply (8x^2) by (2x+8)
7: the answers should be the same however i'm assuming this is Algebra 2 and have never seen the second part of the question before
hope this helps
<span>x y
-3 1
1 3
3 4
5 5
is your answer</span>
F(4)=.5×4+8
simplified to F(4)=2+8,
simplified even more means F(4)=10.