Suppose y varies jointly as x and z, and y = 72 when x = 4 and 2 = -6. What is the value of y when x = -5 and z = 7?

Y=__

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

Hurry if the population of of an ant hill doubles every 10 days and there are currently 100 ants living in the ant hill what will the ant population be in 20 days