98 is the product of chrissy's height and 7 how do i make this a equation

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

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.

Sum is 17 and their difference is 3