Answer: [tex]\$8.855[/tex]
Step-by-step explanation:
The former cost of the book is [tex]\$8.05[/tex]
The new cost of the book is the old cost plus the [tex]10\%[/tex] of [tex]\$8.05[/tex]:
[tex]\$8.05+\$8.05(10\%)[/tex]
Since:
[tex]10\%=\frac{10}{100}=0.1[/tex]
We have the following:
[tex]\$8.05+\$8.05(0.1)=\$8.05+\$0.805[/tex]
Then, the new price of the book is:
[tex]\$8.855[/tex]
