exam Maths Puzzle Numerical Ability

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With compound inequalities, you have two or more inequalities joined by the "and" or "or". Which of the following compound inequalities are true?
A) x>4 and

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exam Other Question

Given y=(x-2)/(x+5) fing the inverse function (switch x&y and solve for Y)

Could someone help me with this one plz Please help!!!
Need to make long and short range missiles. Can't make more than 50 missiles and no more than 30 long range types. Spend 60,000 on short range and 90,000 on long