You simply divide 3 into 8, which results in 0.375. Now you add 7 to it, which is 7.375.
Well to get the area of 288 the dimensions would be a couple of things but 16 ft by 18 ft seems to work, so the dimensions increase by 4 ft on each side.
12+4=16
14+4=18
18*16=288
Answer:

Step-by-step explanation:

Answer: $23.10
Step-by-step explanation:
18/3 = 6
3.85 x 6 = $23.10