What is the factored form of the following expression?

w2 + 18w + 77
a. (w – 7)(w + 11)

b. (w – 7)(w – 11)

c. (w + 7)(w + 11)

d. (w + 1)(w + 77)

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.