Shen’s mother gave him $10 to go buy groceries. He picked up a gallon of milk for $3. 49, three pounds of oranges that cost $1. 14 per pound, and a box of cereal for $3. 46. Shen used front-end estimation to determine whether he had enough money for the groceries. How much did he estimate the total cost would be?.

Scientists observed a rock stratum with fossil. if mollusks evolved before arthropod, where will their fossils be found.

Luminous objects such as flashlights emit light that we can see. how do we see an object that isn’t luminous? a. the object emits light that reaches our eyes. b. light reflects off the object and reaches our eyes. c. light passes through the object uninterrupted. d. light is fully absorbed by the object. e. we can’t see an object that isn’t luminous.

A24-n net force acts on a 8-kg rock.what is the acceleration of the rock?