exam Maths Puzzle Numerical Ability

Which of the ordered pairs is a solution for the equation 3x - 4y = 12?

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exam Other Question

solve the following equation for x: 3^2x=15
is it 2.46? Circle Path, Inc. makes bicycles, tricycles, and unicycles. Last week they made 88 more bicycles than unicycles, and 5 times as many tricycles as unicycles. If they made 40 more bicycles than tricycles, how many unicycles did they make?