To solve the equation 2x - 1 - 7 = 9, first
DO
write each side with base 2
add 7 to each side
divide both sides by 2

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?

Three people are traveling and need to exchange the currency of their native country for the currency of the country they are visiting. drag each exchange to the category that shows the ratio of currencies in that exchange.

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re