Factor 10x2 + 8x2 - 6x.
2x(5x + 4x - 3)
2x(5x + 4x 2 - 3)
2x(5x 2 + 4x - 3)

What numbers are included in the set of integers? what numbers are not included?

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?

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?