The answer is X = 11 - 3. This is because to calculate the original value of how many books Isabella had, you have to take away the amount purchased from the overall total amount. Therefore, the equation is x = 11-3
Mean: average of the numbers median: middle of the numbers mode: which number appears the most
Multiply the 20 packs by the 0.48 per pack
Your answer will be $9.60
The answer would be a. 288. hope that helped