19. identify the coefficient of −24x7y3

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.