Is this a function? Also i need help with the domain and range idk if this ends or not

Subtract 8 – (-2).

6

10

-10

-6

Step-by-step explanation:

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7