Y=x^2+6
what values of x give a y value of 7

Of four points are collinear, they are also coplanar

How do i do this activity, is appreciated

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4