Answer:
f(x) = 2 ( x + 7/4)2 - 25/8
Step-by-step explanation:
The mean is the average of the numbers: a calculated "central" value of a set of numbers.
Therefore: If the amount spent on books per month by all her classmates is leveled that amount would be $30
To calculate it: add up all the numbers, then divide by how many numbers there are
That would be : 6fg^3 + 5f^2g^2 + f^3g - 7....because there are no like terms
