Answer:
f(- 3) = 40
Step-by-step explanation:
To evaluate f(- 3), substitute x = - 3 into f(x), that is
f(- 3) = - 2(- 3) - 9(- 3) + 7 = 6 + 27 + 7 = 40
let's recall that in the I Quadrant, x,y or cosine,sine are both positive, thus
Answer:
the first one.simple ezzzz