Answer:
(192-124)/4 = weeks of dieting necessary
Explanation:
Don't let the graph spook you. sometimes they put unnecessary information into problems so you have to sort through a find what is important.
take the change in weight (initial - final) and divide it by the amount sheila thinks she can lose in a week. this will give you the necessary weeks.
how would you find how many days it would take her?
how much weight does sheila lose per day?