Write the slope-intercept form of an equation of the line that passes through (0, –4) and is parallel to the graph of 4 x – y = 7.

Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries

If f(x)=x+7 and g(x)=1/x what is (fog)(x)

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?