exam Maths Puzzle Numerical Ability

Please help solve the inequality and graph solution on a number line

X-9<3(x+1)

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exam Other Question

Can you please help me with this i do not understand it.

Solve using the square root property

5x^2 = 100

thank you
julie Determine the remainder R after each of the following divisions.

(x^8 - x^5 - x^3 + 1) divided by (x + square root of -1).

R = P(-i) = (-i)^8 - (-i)^3 + 1 = i^8 + i^5 + i^3