A zoo is building a new large-cat exhibit. Part of the space will be used for lions and part for leopards. The exhibit will hous
e eight large cats in all. Expenses for a lion will be about $8000 per year, and expenses for a leopard will be about $6000 per year. Write an equation that can be used to find y, the yearly expenses for the eight cats in the exhibit when z of the cats are loins
Total cats: 8 Total expense: y Expense per lion:$8,000 Total lions: z Expense per leopard: $6,000 Total leopards: 8 - z Therefore, the equation becomes: total expense = number of lions × expense per lion + number of leopards ×expense per leopard y = 8000z + 6000(8 - z) y = 2000z + 48000
Talking as if the balls do not get put back into the bag, the first probability is 3/10 for yellow. For red it will be 7/9 because there is one less ball (yellow) in the bag.
