I would Say B because x + 8 then do 5 to the third power and get so 343
Answer:
21.24
Step-by-step explanation:
<span>15x + 35y - 40 z = 5 (3x + 7y -8z)
hope that helps
............................</span>
What you do is add up all the values, then divide by the number of values.

The average of the data is
4.8575.