# A.4.5.3 Function Notation and Graphing Technology

- Author:
- LeonMilewski

The function B is defined by the equation B(x)=10x+25. Use graphing technology to:

1. Find the value of each expression: B(6) B(2.75) B(1.482)

2. Solve each equation: B(x)=93 B(x)=42.1 B(x)=116.25

Refer back to the activity about data plans. Display the two graphs for all to see.
Ask students to use the graphs to find:

- the values of A(0.8) and B(0.8)
- the solutions to A(x)=72 and B(x)=72