It is known that x+y=10 and that x=z show that z+y=10

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

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

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