Question

7th grade math help pls i've had to redo this question 3 times cause my teacher.

Answer 1

neon: 0 percent change oxide: -2 percent change copper: 2 percent change tin: 0 percent change

Explanation:

Neon: -10+10=0

Oxide: -10+8=-2

Copper: -27+29=2

Tin: -50+50=0

Hope this helps