Three times the difference of a number and four.
or
Three times the quantity of four less than a number n.
Step-by-step explanation:
I hope the picture is visible
:)
It is 13 inches wide and 26 inches long. I found this out by looking at the factors of 338.
the base of the ladder is 18ft away from the wall
You check if it is even and that the sum of the digits is divisible by 3. That's the divisibility rule of 6.