What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y-1?

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?

What is the least common multiple for 6 and 8? what is the least common multiple for 4 and 12 ? what is the least common multiple for 11 and 12? what is the least common multiple for 3 and 6?

You buy a veido game for $60 and the sales tax is 8% what is the total cost for the game including the sales tax