What possible attendance numbers for the fourth show will allow them to reach their goal?

Question

The art club is sponsoring art shows. They hope the average attendance for the four shows will be between 100 and 120 inclusive. The attendance for the first three shows was 100,105, and 91.

Write and solve an inequality for this situation.

Write the set notation and the interval notation.

Answer 1

You will have to solve  100 ≤ ¼ (100+105+91 + x) ≤ 120.

 

That should be doable!