17. Aly is trying to limit her total calorie intake for breakfast and lunch to 850 calories. The number of calories that she can consume for lunch is given by the expression 850 – b, where b is the number of calories consumed for breakfast
Determine the number of calories allowed for lunch assuming that she had the following number of calories at
breakfast:
a. 475 calories
b. 220 calories
c. 580 calories