50 POINTS PLEASE HELP

What expression is equivalent to log3(x+4)

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field