It is 8 degrees at 8pm. By midnight, the temperature has dropped 12 degrees. What is the new temperature outside?

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

Ineed in figuring out this problem.

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.