Will someone be my friend

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

Jane has 5 nickels.john has 3 dimes.jane says she has a greater amount of money.with the information given,is she correct?

7x^2-9x+5=0 find the discriminant and number of real solutions