4) Suppose a cube is painted blue and then cut up into smaller cubes so that it becomes a 5 X 5 X 5 cube.
I
a) How many cubes are painted blue on two sides?
b) How many cubes are not painted at all?

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar(s). line m has no y-intercept, and its x-intercept is (3, 0). line n has no x-intercept, and its y-intercept is (0, -4). the equation of line m is , and the equation of line n is .