book Maths Puzzle Numerical Ability

Hello,


I would appreciate it if a tutor could verify my answer for the below problem.


Solve the inequality x^2-10 less than or equal to -3x using the test point method.

Read Solution (Total 0)

book Other Question

This proble involves a function rule..
Input X 1 2 3 4 5 6
Output Y 3 2 1 0 -1 -2
We need to determine the function rule.

Another one..
Input X 1 2 3 4 5 6
Input y 1 3 5 7 9 11

Thanks!
I need help on this problem. Thankx
What is Sn for the arithmetic series with d = -4, an = 27, and n = 9?