Answer:
9.9
Step-by-step explanation:
all you need to do is to use the Pythagorean theorem. to find line segment ac.
It would be $4,290 because you would multiply 55 dollars by 78 hours.
Line of sym is. x= -12/2*2 =-3
plug 3 in to original equation to get 2*9+12*-3-5 =23
vertex is 3, -23