The graph of y = 4x2 - 4x - 1 is shown. Use the graph to find estimates for
the solutions of
6
5
i) 4x2 - 4x – 1 = 0
+
4
3

ii) 4x2 - 4x – 1 = 2
+
I
I
+
-2
-1
2
- +
2

Aculinary club earns $1360 from a dinner service. they sold 45 adult meals and 80 student meals. an adult meal costs twice as much as a student meal. what is the cost of an adult meal?