Grade 9 indices exercise

Match each inequality to the number line that represents its solution

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?

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form