1) The base of a 10-ft ladder stands 6 feet from the base of a house. Will the ladder reach 7 feet high? Justify your answer.
10 ft
6 ft

this linear equation would have just one solution.

step-by-step explanation:

the reason why this would have one solution is that it is an expression with just one variable. since that variable is not raised to a power, it will always have just one solution.

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.