Lena jarred 10 liters of jam after 2 days. How many days does Lena need to spend making jam if she wants to jar 20 liters of jam in all? Assume the relationship is directly proportional.

The table above shows approximate conversions from gallons to liters. what is the value of x?

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)