Answer:
Answer A. 30 I believe.
Step-by-step explanation:
Find out what the x numbers eaqul to y
Answer:
C.
Step-by-step explanation:
i believe it is C but do not trust me on this :p
Answer:
-x^8+10x^3-7x^2+7x+15
Step-by-step explanation:
-7x+10x^3-7x^2-x^8+15
Standard form is from highest power to lowest power of x
-x^8+10x^3-7x^2+7x+15