What’s the Exponential equation with the given points (1,21) and (2,147)?

Tcan be concluded that % of the seniors would prefer to see more candid pictures in this year's edition of the yearbook.

Acircle has a circumference of 28.36 units what is the diameter of the circle

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?