Can somebody please explain how to do the problem below I'm studying for a test plz help! thank you!

50

Step-by-step explanation:

Starting point: -50An answer that is correct: add the required amount of points to your scoreAn answer that is incorrect: subtract the required amount of points from your score150 point question correct: -50 + 150 = 100250 point question incorrect: 100 - 250 = -150Four 50 point questions correct: -150 + (50 × 4) = -150 + 200 = 50

I hope this helps!