For the function f(x)=x^2+8 find the slope of the tangent line x=10?

Which of the following lines is not parallel to the graph of y = 4x +7?

Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 10.5, q1 at 11.5, median at 12.5, q3 at 13.5, max at 15

What is the result of the following division?