What is the vertex of the function f(x) = |x − 9| + 2?

A.) (9,2)
B.) (-9,-2)
C.) (-9,2)
D.) (9,-2)

Apasta salad was chilled in the refrigerator at 35° f overnight for 9 hours. the temperature of the pasta dish dropped from 86° f to 38° f. what was the average rate of cooling per hour?