Write the equation of the line that passes through the points (1,7) and (5,15) using function notation. options are:
y = 2x +5,
y = 4x + 8,
f(x) = 2x + 5 or
f(x) = 4x + 8.

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

The triangles in the diagram are congruent. if mzf = 40°, mza = 80°, and mzg = 60°, what is mzb?

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.