What is the missing number in this pattern ?

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

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.