Find the value of f(3) for the function.
f(x) = - 4(x + 5)
f(3) = ?

110 degrees

Step-by-step explanation:

Ok so in a quadrilateral, the sum of the interior angles have to add up to 360 degrees*.

This means that x + 128 + 82 + 40 = 360, so you can solve this as an equation:

x + 128 + 82 + 40 = 360

x + 250 = 360

x = 110 degrees

*The reason the interior angles of a quadrilateral add up to 360 degrees is because the formula for the sum of the interior angles in a polygon is

180 * (n - 2) where n is the number of sides, so since this polygon has 4 sides it would be:

180 * (4 - 2)

180 * 2

360 degrees

Hope that makes sense!