Approximately 3.25 x 10^6 cubic yards of material were used to build Boulder Dam on the Arizona-Nevada border. The New Cornelia Tailings Dam in Arizona used 2.74 x 10^8 cubic yards of material.
How many more cubic yards of material were used to build the Cornelia Tailings Dam than Boulder Dam?

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5

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.