Simply the expression 5a + 7 +3a -2

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 of the following is true for the relation f(x)=2x^2+1

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9