The number of apples produced by each tree in an apple orchard depends on how densely the trees are planted. if n trees are planted on an acre of land, then each tree produces 900-9n apples. so the number of apples produced per acre is a(n)=n(900-9n)

Empty box + box + empty box fill in the box is equal to 30 how

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

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?