The Dippin’ Dots booth sells both regular and large ice cream cups. The prices are shown in the chart. Six Flags charges the Dippin’ Dots company $175 per day for the booth rental. The Dippin’ Dots company sells 45 regular sized ice cream cups one day. If they want to make at least $500 after paying for the booth, what is the least amount of large sized ice cream cups that they must sell? PLS HELP (include equation too pls)