Question

Help with this please

Answer 1

77

Explanation:

Average: avg = (n₁ + n₂ + n₃ +...)/n

Plug in: 80 = (82 + 89 + x + 74 + 78)/5, where x = points scored in game 3

Add: 80 = (323 + x)/5

Multiply: 400 = 323 + x

Subtract: x = 77