exam Maths Puzzle Numerical Ability

Write a quadratic equation based on the points (-1,0), (0.67,0), and (0,-2); and find its solution.

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exam Other Question

How do you solve 20x = 30y - 45000
also, 0.4x + 1.2y =4.8
Solve: Use your calculator and the change of base theorem to evaluate log7(497)

Answer: log7(497)=