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Find the vertex of the function given below y=x^2-6x+1

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

For which pair of functions is (gof)(a)=|a|-2?