The expression 5.1.15' gives the area, in square meters, damaged by a fire as a function of minutes since
the fire was discovered.
What does 5 represent in this expression?
Choose 1
It has been 5 minutes since the fire was discovered.
The area damaged by the fire is multiplied by 5 each minute.
An area of 5 square meters had been damaged by the fire by the time it was discovered.

what are the things "represented below"?

step-by-step explanation:

nobody can if you dont give the choices

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18