What’s is the median number of guest at these parties

How to solve it and what thw answer is

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form