Write the equation, solve and show all work. On Friday Selvin had $32. Over the weekend he did some work for his neighbor. He now has $85. How much money did he receive?

What are the domain and range of the function? f(x) = -4 (sqrt)x

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online