Answer:

Step-by-step explanation:
<h3><u>Given equation:</u></h3>
3x + 2 = 0
Subtract 2 to both sides
3x = 0 - 2
3x = -2
Divide 3 to both sides
x = -2/3
![\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Crule%5B225%5D%7B225%7D%7B2%7D)
Answer:
16
Step-by-step explanation:
plugin -7 for where x is
f(-7)= (-3)(-7)-5
=21-5 is 16
100 square centimeters means the dimensions are 10x10
but the actual floor will be 1cm:2ft
so 10cm=20feet
making the dimensions 20feetx20feet
the area of the actual floor is 400 feet
I think it’s b
have a nice day