6x+6= x squared + x

How do I deal with the x squared when solving for x

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?

Aphrase is shown read the phrase and give me the answer

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount