Answer:
Then answer is 10.
Step-by-step explanation:
9 would cover 1,800 square feet so 925 square feet would be left so you should buy 10 cans.
Answer:

Step-by-step explanation:
The easiest way to solve this equation is to first find and highlight a common factor between two terms. In this case, x^2 can be factored to rewrite the equation as follows:

The (x+7) term can be crossed out on both sides and then for this equation to be true, there are two possibilities:
Either

or

Therefore, the solutions to this equation are -1, 1 or -7.
Alright, so the equation we have here is 22.75x+32=128.69
Now we just solve
-32 on both sides, we get
22.75x=96.69
divide by 22.75 on both sides we get
x=4.2501989
So 4 hours
You add the 4.25 hours
10, 11, 12, 1 is the hour
And .25 is a fourth, and a fourth of 60 minutes is 15 minutes
So he left at 1:15 pm