Sylvia earns $7 per hour at her afterschool job. one wk she worked several hours and received a paycheck for $91. what is the # of hours in which sylvia would earn $91?

Franco wants to double the volume of the cone. what should he do?

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.

3x = 729 solve for x plz . it's urgent. will mark