The solid shown has a volume of 9 units3. Determine the surface area of the solid.

A) 29 units2
B) 36 units2
C) 38 units2
D) 41 units2

C) 38 units2

Step-by-step explanation:

we know that

The surface area of the composite figure is equal to the area of all its square faces

Each face area is one square unit

so

x+14

step-by-step explanation:

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