Reggie lost 4 spaceships in level 3 of a video game. he lost 30 points for each spaceship. when he completed level 3, he earned a bonus of 350 points. by how much did his score change?

He lost 4 spaceships, each subtracting 30 points

4(-30) = -120

On completing, he earned a bonus of 350 points
0 + 350 = 350

Subtract the amount of points he lost from the bonus

350 - 120 = 230

His score has a positive 230, or x (total points he gotten) plus the bonus

x + 230

hope this helps