Elizabeth had a book delivered to her home. the total cost included the price of the book, 7% sales tax on the price of the book, and a $4.50 shipping charge. elizabeth paid a total of $31.25.

what was the pre-tax price of the book?

What’s the numerical coefficient of 6xy

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.