Identify how many zeros each function would have.

At which value in the domain does f(x) =0?

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

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?