exam Maths Puzzle Numerical Ability

Find the equation of the line with slope 0 and y-intercept (0, -2). Write your answer in the form y = mx + b.

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exam Other Question

Bob owns a watch repair shop. He has found that the cost of operating his shop is given by c(x)=4x^2-304x+71, where x is the number of watches repaired. How many watches must her repair to have the lowest cost?

Thanks. Using the following sequence (-1,-5,-9,-13,...) find the function tn.