book Maths Puzzle Numerical Ability

Please explain in detail, I want to do the rest of them myself

Solve each compound inequality. State the solution set using interval notation and graph it

4. x <= 0 and x + 6 > 3

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book Other Question

please help me on this question-- im terrible at math!

the spoke of a wheel reaches from the center of the wheel to its rim. If the circumference of the rim of the wheel is 42 inches, How long is each spoke? Round the answe to the nearest hundreth 2y squared + 2=9y