It's a geometry question. Proofs

What is the effect on the graph of the parent function f(x) = x when f(x) is replaced with 3f(x)? a) shifts the line 3 units up b) shifts the line 3 units down c) increases the slope of the line by a factor of 3 d) decreases the slope of the line by a factor of 3

Question and answers are in the attached picture. you so much in advance.

The ratio of men to women working for a company is 4 to 5 . if there are 90 women working for the company, what is the total number of employees?