What is the domain and range of {(-11,11), (-8,8), (0,0), (13,-13)}

What is the area of triangle abc if a = 8, b = 11, and c = 15?

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

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?