Solve the system using any algebraic method. show all your steps.
19. 2x-5y=3
-4x+10y= -6
20. 8x+3y=10
-6x + y = -12

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?