X^4+ 3x^3+4x^2-8 | x+2 = x^3+x^2+2x-4
-x^4-2x^3
-----------------------
x^3+4x^2-8
-x^3-2x^2
-------------------------
2x^2-8
-2x^2-4x
--------------
-4x-8
4x+8
----------------------------
/ /
is a factor because (x+2)(x^3+x^2+2x-4)=x^4+3x^3+4x^2-8
Answer: I think it's 960.
Step-by-step explanation:
Add up all of the numbers:
(160.2+163.2+157.8+159) = 640.2
Find the average by diving 640.2 by how many numbers there are:
640.2 ÷ 4 = 160.05
Round that average^^:
160.05 >>> 160
Multiply by how many numbers there will be:
In this case, your job is to estimate how far Jose ran in 6 months, not just those 4. So instead of multiplying the average (160) by 4, you'd multiply it by 6.
160 x 6= 960
