What are the factors of 3x2 + 13x + 4?

(3x + 1)(x + 4)
(3x + 4)(x + 1)
(3x − 4)(x + 1)
(3x − 1)(x + 4)

The average daily maximum temperature for laura’s hometown can be modeled by the function f(x)=4.5sin(πx/6)+11.8 , where f(x) is the temperature in °c and x is the month. x = 0 corresponds to january.what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed.use 3.14 for π .