Which statement is true about

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?

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)