150/250=? /100 i don't know the answer

  best answer for the question.1.     divide  7/24  by  35/48  and reduce the quotient to the lowest fraction. 

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

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?