exam Maths Puzzle Numerical Ability

Graph an Equation of the form Ax + By = C

3x + y = 3

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exam Other Question

Suppose a is a whole number and b is an irrational number. Is it possible for the broduct of ab to be a rational number? A number is spooky if it is not happy and it's prime. find all of the spooky numbers less then 100.
problem not in my book.
thank you for any help
mike