Answer:

Step-by-step explanation:
A zero or a root is determined at the point where the curve cuts or meets the x-axis or horizontal axis.
Answer:
a = 14
Step-by-step explanation:
The mean is the sum of the values divided by the number of values.

First you need to multiply the one in the bracket 7x2 which is 14 then u must multiply it with 3 to get the answer so 14x3 which equals to 42
Answer:
27
Step-by-step explanation:
The answer is x=27