Exercise 19 Page 149

We are given an expression and asked to evaluate it for some given values. x=1.8, 5, 6.4This means that we should substitute 1.8, 5, and 6.4 for x in the given expression and then evaluate. Let's start with 1.8.

x(3.35)

Substitute

x= 1.8

1.8(3.35)

Multiply

Multiply

6.03

Now, let's do the same thing for the rest of the values.

x	Evaluation	Result
1.8	1.8(3.35)	6.03
5	5(3.35)	16.75
6.4	6.4(3.35)	21.44