7. Lola spent $600 buying makeup and perfume at an online store that charges $15 for each lipstick and $40 for each perfume. She purchased a total of 10 perfumes and lipsticks combined.
Write a system of equations that represents this situation. *
(5 puntos)

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?