19. When the cafeteria is mopped, part disinfectant are combined with 3 parts hot water. The custodial service buys 1 gallon of disinfectant. How much hot water will be used in total to finish this 1
gallon of disinfectant?

The jurassic zoo charges $14 for each adult admission and $5 for each child. the total bill for 77 people from a school trip was $565. how many adults and how many children went to the zoo? i

Five dinosaurs go for a walk and come across some lovely chicken wings. their names are rexy, bronto, steggy, paly, and terry. there are exactly 5 dozen wings(equal enough for each dino to have a dozen right? ); however, terry is on a diet and he only eats 6 wings. if paly eats 2 more than terry, steggy eats 4 more than paly, and bronto and rexy eat the same amount because they are really hungry from not eating all day, how many chicken wings did each dino eat?

How do you determine if an ordered pair is a solution to a given equation?