Amath club took a math test. twelve of the members had an average score of 80. eighteen of the members had an average score of 86. what was the class average?

12 x 80 = 960

18 x 86 = 1548

960 + 1548 = 2508

12 + 18 = 30

2508/30 = 83.6

The class average is 83.6

which expression can be used to convert 80 us dollars (usd) to australian dollars (aud)?

1 usd = 1.0343 aud

1 aud = 0.9668 usd

step-by-step explanation:

sorry just need the points

14

step-by-step explanation:

14 x 3 = 42