Can anyone help this is confusing??

The variable in a relation who’s value depends on the value of the independent variable is called what?

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?

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.