john needs 480 pounds of dough to make 40 extra large pizzas. how much dough is needed to make 50 extra large pizzas?

Iwill make brain if you me correctly fill this out needs due today pls and send it back to me (click the link and you will get it)

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3