To find the mean you add all the #'s and divide by how many there are. 4+5+6+7 +8= 30 /5 is 6. Tara is right.
Answer:
X 90 z 90 y 90
Step-by-step explanation:
hii
f(n)=4n³+8n²-n-3
f(-2)=4(-2)³+8(-2)²-(-2)-3
=-32+32-1
f(-2)=-1
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