A bag of oranges weighs 15 pounds. How many kilograms is this? (1 pound ≈ 0.454 kilogram)

What is the average rate of change for this function for the interval from x=2 to x=4 ?

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Find two consexutive odd integers such that the sum of their square is 650