Melissa bought a cake that cost $75. the sales-tax rate is 10 percent. what is the total amount she paid for the cake?

the total amount she paid for the cake, $82.5

Step-by-step explanation:

As per the statement:

Melissa bought a cake that cost $75.

⇒Cost of cake = $75

It is also given that:

The sales-tax rate is 10 percent.

then

Sale tax she gave on cake =

We have to find the total amount she paid for the cake.

Substitute the given values we have;

therefore, the total amount she paid for the cake, $82.5