It is B because the graph's y-intercept lies on the point (0, -50), hence the equation, y = x <u>- 50</u>. In addition, you can verify that B is the correct answer because the slope of the graph is positive, and so the x-value also must be positive.
When doing scientific notation the number can't be equal to or bigger than 10 so since it was 12 you had to move the decimal over one so ^-1 then since thousandth is .000 then you have to do ^-3 and then ^-1 + ^-3 is ^-4 and so it comes out 1.2x10^-4... in bad at teaching but hey now you know the answer
