What are two numbers that multiple to -64 and add to -12

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

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?