C and make sure next time make the pic look cleaer
To find the total measure of the angles in a polygon, the formula is 180(n-2) n being the number of sides in the polygon.
So the correct answer is B) 180(14-2)
First note that f(x) means the same thing as y. To solve for f(x) or y you need to plug in -5 for x and solve using the rules of PEMDAS
5(-5) + 40
-25 + 40
15
When x is -5 then y is 15
Hope this helped!
~Just a girl in love with Shawn Mendes
9(2) + 2(y) = 50. solve for y. 32=2y, y=16. It is 16 meters long.
The linear combination method is the same as the elimination method. Let's multiply the second equation by -2 so the x terms cancel each other out. When we do that we get a system of

and

. The x-terms cancel each other out giving us

and y = -3. Now sub -3 into one of the equations to solve for x. x+2(-3)=-4, and x - 6 = -4. x = 2. So the solution for our system is (2, -3)