Answer:
1.15 or 
Step-by-step explanation:
1. The slope can be found with this formula: 
2. Let's plug in the numbers: 
4.
≈ 1.1538
Step-by-step explanation:
DC = 12
................
Answer:
The actual dimensions of the closet are 2 ft by 3 ft.
Step-by-step explanation:
According to the scale, 1/4 inch <--> 1 foot
The closet dimensions on the scale are (1/2 inch, 3/4) or (2/4 inch, 3/4). Let the real closet dimensions be (x,y).
In this case, the rule of three can be applied to find the missing term of a proportion:

The actual dimensions of the closet are 2 ft by 3 ft.
X = bessie and y = betty
x + y = 1464
y = 2x - 375
x + 2x - 375 = 1464
3x - 375 = 1464
3x = 1464 + 375
3x = 1839
x = 1839/3
x = 613 <== Bessie gave 613 gallons
y = 2x - 375
y = 2(613) - 375
y = 1226 - 375
y = 851 <== Betty gave 851 gallons