The tax rate as a percent, r, changed an item can be determined using the formula c/p-1=r, where C is the final cost of the item and P is the price of the item before tax Louis rewrite the equation to solve for the final cost of the item: c=p(1+r). What is the final cost of a $40 item after an 8% tax is applied

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −