Okay this ones tricky, 30/12 is 2.5 so in 12 mins she does 2.5?
The answer to they is x=0
79.14 dolaaaaaaaaaaaaaaaaaaaaaaaaarrrrrs
(given)
(subtract 5x from both sides)
(subtract 3 from both sides)
Answer:
The length of the lot is 
Step-by-step explanation:
Remember that

In this problem the area of the lot is equal to

Let
x-----> the length of the lot
y ----> the deep of the lot
The area of the lot is

we have


substitute and solve for x

