What is the type of function f(x)= 3/8 (4)x

Janet is mixing a 15% glucose solution with a 35% glucose solution. this mixture produces 35 liters of a 19% glucose solution. how many liters of the 15% solution is januet using in the mixture? a. 25 liters c. 28 liters b. 7 liters d. 10 liters

Do 12/14 and 8/10 have the same value? explain your answer.

Is this a polynomial function? i need to know asap