We want to find the total cost of the notebook. Let's start by calculating the dollar amount of the tax. We can do this by using the percent equation.

part = percent \times whole

We are given that the notebook costs

$ 2.95

plus

5 %

tax. Let

t

represent the dollar amount of the tax.

t = 5 % \times $ 2.95

Before solving the equation we got, we need to write the percent as a decimal. We can do this by ignoring the percent symbol and moving the decimal point two places to the left.

We got that

5 %

is equal to

0.05 .

t = 5 % \times $ 2.95 ⇓ t = 0.05 \times $ 2.95

Finally, we will solve the equation for

t .

For simplicity, we will omit the dollar symbol.

t = 0.05 \times 2.95

UseCalc

Use a calculator

t = 0.1475

RoundDec

Round to $2$ decimal place(s)

t \approx 0.15

We found that

t \approx 0.15

is a solution to the equation. This means that the dollar amount of the tax, rounded to the nearest cent, is about

$ 0.15 .

Now we can calculate the total cost of the notebook, which is the

regular

price

of

the

notebook

plus the

tax .

Total cost \approx $ 2.95 + $ 0.15 = $ 3.10

The total cost of the notebook is about

$ 3.10 .

Exercise

This Solution is Missing. Mathvizy Can Solve This Problem For You