book Maths Puzzle Numerical Ability

Can someone please help me with this problem. Graphing is especially difficult for me. Thank you.

Solve each rational inequality. State and graph the solution set.

x + 3/x eq

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book Other Question

factor the algebraic expressions completely

6x^2 - 28x + 16
Solve the determinant
3 x
1 1 = 2

(the 3 x and 1 1 are inside determinant signs)