Evaluate j/k-0.2k when j=25 and k=5

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g