A recipe for a soup. calls for 1/3 cup of chopped onion and 2/6 cup of chopped celery. What is the total amount of celery and onion needed for the soup?

)a smart phone has dimensions of 4.9 inches (height), 2.3 inches (width) and 8.0 millimeters (depth). what is the volume of the smart phone in cubic centimeters? (1 in = 2.54 cm)

The area of square garden is 300m squared. how long is the diagonal?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?