Can someone me with these. i don’t even know if i did them right

Fast phone couldn’t copy and paste so i decided to right it down

Two fire-lookout stations are 190 miles apart, with station a directly south of station b. both stations spot a fire. the bearing of the fire from station a is upper n 55 degrees upper e and the bearing of the fire from station b is upper s 60 degrees e. how far, to the nearest tenth of a mile, is the fire from each lookout station?

Which expression is equivalent to 2x^2+7x+4?