Which equation best represents the line of best fit for the scatter plot? a) y= 2.5x + 25 b) y= -2.5x + 20 c) y= -0.05x + 20 d) y= -0.005x +22.5

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

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?

Is there an x intercept in the equation 60*1.15^x