19. A scale drawing of a doctor's office is shown. What are the
actual dimensions of the doctor's office? Explain how you
found your answer.
Doctor's
Office
2 in.
3 in.
Key 1 in - 20 ft

40 by 60

Step-by-step explanation:

You are given a scale of 1 inches=20 ft

For the 2 inch dimension, you get:

2*20=40

For the 3 inch dimension, you get:

3*20=60

Therefore, the real dimensions of the doctors office from 2 in. by 3 in. are respectively 40 ft, by 60 ft.

Hope this helped!

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

c

step-by-step explanation: