The height of water in a rectangular tank is given by h(w), where w is the volume of water (in liters) that has been removed from the tank. the height of the water decreases 10mm per liter removed.
a. from the time when 7 l have been removed to the time when 15 l have been removed, the accumulated change in the height of the water is
b. if the initial height of the water is 600mm, then the height of the water after w liters have been removed is

Aprofessional hockey team has noticed that, over the past several seasons, as the number of wins increases, the total number of hot dogs sold at the concession stands increases. the hockey team concludes that winning makes people crave hot dogs. what is wrong with the hockey team's conclusion? a) it does not take into account the attendance during each season. b) it does not take into account the number of hamburgers sold during each season. c) it does not take into account the number of concession stands in the hockey arena. d) it does not take into account the number of seasons the hockey team has been in existence.