Every day a zookeeper feeds 4 adult elephants a total of 320lb of food. At this rate, how many pounds of food would the zookeeper need every day to feed 6 adult elephants?

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?