Ruby works at Patty cakes where they sell round cakes in the sizes shown below

(hurry! ) which expression is equivalent to the following complex fraction?

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Frank owns a $141,000 home, for which he has a 30-year mortgage in the amount of $700 a month. once he has paid off mortgage, how much will he have paid in investment? a. $111,000 b. $109,000 c. $120,000 d. $141,000