A restaurant customer left $1.95 as a tip. The tax was 4% and the tip was 15% of the after tax cost. Which information is not needed to compute the bill after tax and tip? What
was the total bill?

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?