exam Maths Puzzle Numerical Ability

solve the equation:

sq rt of 3x+1 +2 =4

i am so conufesed please help
on page 387

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exam Other Question

-6|5-2y|= -9

From a homework worksheet.
for each compound inequality, give the solution in both interval and graph form.

3x < x + 12 or x + 1 > 10