Plz me i have an idea on what to do, but what do i do with the 20 3/4 and the 16 1/4

Geometry? i am really bad at math and have dyscalcullia. .

What is the equation of the graph that represents f(x)=x^4 stretched vertically by 2 and shifted up 3 spaces

Maria donates a fixed amount, a, to a charity each month. if she donates $300 in 12 months, what is the equation for a? a. a + 300 = 12 b. a × 300 = 12 c. a × 12 = 300 d. a + 12 = 300 e. a + 32 = 100