Answer:
Here’s how you find the mean. Find the sum of all the data combined. Then divide the sum by how many numbers of data there are!!
Step-by-step explanation:
-509
Im not sure if this is correct but i believe so
Answer:

Step-by-step explanation:
Given

Required
Factorize
To start with; we need to group the expression into two

Factorize each grouped expression, using their common factor

From the list of given options;
Option A is correct
No, the graph fails the vertical line test. In a function, each x value only has one y value. The y value can have more than one x value in a function