Urgent need help in Mathematics 9700

[moonangel996]

Can someone help me please ??
1) http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s10_qp_31.pdf Question 9
2) http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w12_qp_31.pdf Question 7
3) http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_33.pdf Question 8 and 10
i need help please its urgent and iam really scared . Thank you in advance