Question

Leila is buying a dinosaur model. The price of the model is x dollars, and she also has to pay a 7% tax. Which of the following expressions could represent how much Leila pays in total for the model?

Answer 1

x + 0.07x or 1.07x

Explanation:

To find a percent of a number, multiply the decimal form of the percent by the other number.

7% = 7/100 = 0.07

This means 7% of x is 0.07x.

This would give us the amount of tax to be added; the total amount of the same, including tax, would be

x+0.07x

We can also consider this as adding an extra 7% of the cost. This means we would have 100% of the cost with another 7% of the cost; this is

100+7 = 107% of the cost. 107% = 107/100 = 1.07; this gives us 1.07x.

Answer 2

x +(0.07x) or 1.07x

Explanation:

Leila is buying a dinosaur model.

The price of the model = x dollars

She also has to pay tax = 7%

Total amount she has to pay = x +(7% of x)

As we know 7% =
`(7)/(100)`

= 0.07

Therefore, the expression represent total payment for the model is

x +(0.07x) or 1.07x