If the standard deviation is 13in, then how many standard deviations is joe if he is 5ft

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

The box plots show the average speeds, in miles per hour, for the race cars in two different races. which correctly describes the consistency of the speeds of the cars in the two races?

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6