Sophia is dilating a figure. one of her pre-image points with coordinates (-3, 5) has an image with coordinates (-9, 15). if one of the other image points has coordinates (3, 1), what are the coordinates of its pre-image point?

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅