Which city became known as the "Gateway to the West' because of its role during the westward expansion of the United States

John makes $10.50 pers hour what expression represens how much he will make if he works h hours

What is the value of f(x) = 2.2 for f(-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?