20% of is 11 % of 60 is 21

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(they're both seperate questions)​

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?

Find the solution(s) to x^2-14+49=0