Activity 2.1 Spending and Earning Money

In your groups read page 181 and complete questions 1, 2 and 3 Definition –A sum function is when you add two functions together –S(x) = (f + g)(x) = f(x) + g(x) Skip problem 4 In your groups complete problems 5, 6 and 7 Definition –A difference function is when you subtract one function from another –D(x) = (f - g)(x) = f(x) - g(x)

Complete the graph in number 8 and use it to answer the rest of the questions in 8 Definition –A function that is formed by adding or subtracting terms of the form ax n, where a is a real number and n is a nonnegative integer, is called a polynomial expression in x –Examples x, 14, x 2 -3x+1 Skip to addition and subtraction of polynomial expressions and do problem 11 Time permitting go back and complete exercises 9 and 10