What is the decimal equivalent of the fraction 8/15

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost. swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Triangle xyz has vertices x(1,3), y(0,0)