Math 11 applied

Question

For a fruit salad, Damien will buy at least 20 pieces of fruit. He wants to spend no more than $12. Apples cost $0.30 each and oranges cost $0.70 each.

1. Graph the system of inequalities and give an example combination of fruit that Damien can use.

Answer 1

a + o = 20 pieces of fruit

.3a +.7o = 12 dollars

.3a + .3o = .3(20)

.4o = 12-6=6

o = 6/.4 = 30.2 = 15 oranges

a = 5 apples