which of the following equations represents a quadratic function?

a. the diagonal of a rectangle is 10 m longer than its shorter side. if the area of the rectangle is 60 m, find its dimension?

b. a rectangular garden is 8ft more than its width. the area is 50ft². what whill be its dimension?

c. a car moves 60 kph, what is the distance traveled after 4 hours?

d. roy is twenty-four. he is twice as old as ann when roy was as old as ann now. how old is ann?​