Which expression is a perfect cube?
a.) 12x^12 y^18
b.)12x^27 y^125
c.)64x^15 y^18
d.)64x^27 y^125

Hart manufacturing had six-month sales of $80 million, with $20 million of that amount from the internet. it set a goal to increase the percentage of total sales coming from the internet by 4 percent in the next six months. the results were total sales of $85 million. if the company meets its goal exactly, what will the dollar amount of internet sales be?