Exercise 18 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 ÷ 4

Substitute

x= 1.8

1.8 ÷ 4

CalcQuot

Calculate quotient

0.45

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

x	Evaluation	Result
1.8	1.8 ÷ 4	0.45
5	5 ÷ 4	1.25
6.4	6.4 ÷ 4	1.6