Number 2 plz answer quickly if i don’t finish by 8: 00 i will be in trouble

Which number produces a rationale number when multiplied by 1/5

Identify which functions are linear or non-linear. a. f(x) = x2 + 1 b. f(x) = 2x + 5 c. f(x) = x 2 + 3 d. f(x) = 3 x + 7 e. f(x) = 4x + 10 2 - 5

Are you guys willing to me with these last 8 questions on my homework for math reply to this question that i posted