54 = 3x + 37.5 <== ur equation....and x = number of years 54 - 37.5 = 3x 16.5 = 3x 16.5 / 3 = x 5.5 = x......so it would take 5.5 years...or 5 1/2 years <=
Not A because regular means all sides are equal. B has to be the answer because the others are not. Not C because a right triangle is not regular, i.e. and equilateral triangle. Not D because a rectangle has different side lengths.
