Exercise 32 Page 457

We are given an equation and asked to evaluate it for some given values. x=-2, -1, 0, 1, 2, 3This means that we should substitute -2, -1, 0, 1, 2, and 3 for x in the given equation and then evaluate. Let's start with -2.

f(x) = 5^x

Substitute

x= -2

f( -2) = 5^(-2)

NegExponentToFrac

a^(- m)=1/a^m

f(-2) = 1/5^2

CalcPow

Calculate power

f(-2) = 1/25

▼

Write as a decimal

ExpandFrac

a/b=a * 4/b * 4

f(-2) = 1*4/25*4

Multiply

Multiply

f(-2) = 4/100

WriteDec

Write as a decimal

f(-2) = 0.04

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

x	Evaluation	Result
-2	5^(-2)	0.04
-1	5^(-1)	0.2
0	5^0	1
1	5^1	5
2	5^2	25
3	5^3	125

As we see, the values of the range increases.