Arectangular prism has a length of 7 cm, a width of 4 cm, and a height of 2 1/2 cm.

the prism is filled with cubes that have edge lengths of 1/2 cm.

how many cubes are needed to fill the rectangular prism?

Asap! i'm not good math and i'm lost.

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?