The surface area is ..?

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

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.