For a snow sculpture contest, snow is packed into a cube-shaped box with an edge length of
8 feet. The box is frozen and removed, leaving a cube of
snow. One cubic foot of the snow weighs about 30 pounds.
You can estimate the weight (in pounds) of the cube using
the expression 30V where Vis the volume (in cubic feet) of
the snow. About how much does the uncarved cube weigh?

41/2 - 1 1/3 what is the answer as a fraction?

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.

Simplify (8x2 − 1 + 2x3) − (7x3 − 3x2 + 1). −5x3 + 11x2 − 2 5x3 − 11x2 + 2 x3 + 2x2 + x3 x3 − 2x2 − x3