exam Maths Puzzle Numerical Ability

f(x) = -0.019x^2 + 3.04x - 58.87 describes newspaper circulation (in millions) in the US for 1920-1998 (x = 20 for 1920). When did the circulation approximate 45 million?

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exam Other Question
Solve the linear system by graphing.Using a staright edge to draw your lines

x + y = 1
3x - y = -5 ((3xy(-2 power) z))to the -2power / ((4x(-2power)y)) to the -2 power