Ingrid has $30 to buy oil paints for her painting class. each tube of paint
costs $9. how many tubes can she buy? do not include units in your answer.

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?