Paul has a total of 15 markers and pencil. each pencil cost $0.30 and each marker costs $1.25 how many pencils does paul have

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

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?

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if