Arectangular schoolyard is to be fenced in using the wall of the school for one side
and 300 meters of fencing for the other three sides. the area, a(x), in square meters
of the schoolyard is a function of the length, x, in meters of each of the sides
perpendicular to the school wall.
write an expression for a(x)

Talia took the bus from her home to the bank and then walked back to her home along the same route. the bus traveled at an average speed of 40 km/h and she walked at an average speed of 5 km/h. to determine the time, x, that it took talia to walk home, she used the equation 40(0.9 – x) = 5x. the time of trip 2 is hours. the distance of trip 1 is km.