What is the value of the ratio of 15 to 25

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great