Please help me answer this question.

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?

Pls never taught i’m really confused and i rlly need

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?