A student had taken six tests and received scores 88, 73, 81, 83, 79, 94. The seventh test was coming up and the student wanted to know what score was needed on the seventh test to have a mean score of 83?

83

Step-by-step explanation:

Since the student want to have a mean of 83 in the 7 tests, the total score of the tests will be:

= 83 × 7

= 581

Then, we add the value of the 6 tests and this will be:

= 88 + 73 + 81 + 83 + 79 + 94

= 498

We will now subtract 498 from 581 and this will be:

= 581 - 498

= 83

He needs to score 83 in the 7th test

Okay. So, Marianna has 16 yards of fabric. Subtract 2 2/3 from 16, because those are the leftovers. 16 - 2 2/3 is 13 1/3. 13 1/3 / 3 1/3 is 4. Mariana made 4 pieces of 3 1/3 yard fabric. The answer is C: 4.