Y=0.5^×
inverse function???

Write a corresponding real world problem to represent 2x - 125=400

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?

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?