What is the selling price for a $15 book with a markup of 10%

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Solve the equation by completing the square. x^2+2x=17

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry