$180 is the cost of the goal, and $15 is the cost of each soccer ball.
2)
(-3, 3) (2,0)
slope = (3-0)/(-3-2) = -3/5
3)
y = 3
so slope = 0
ANSWER
The sum of m∠DEA and m∠AEB is 180°.
Reason: The sum of angles on a straight line is always 180°.

Group like terms to get,

Simplify, and get,

Divide both sides by 10 to get,

We substitute this value to get the required angles.



