Answer:
3
Step-by-step explanation:
f(x) = 2x^2 + 1
f(-1) means that wherever you see an x on the right hand side, you substitute -1.
f(-1) = 2(-1)^2 + 1 = 2 + 1 = 3
Answer:

Step-by-step explanation:

It is called the slope of the line
Answer:
x=10
Step-by-step explanation:
Given the numbers above and those numbers only the mean would be 1.8