Hint

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THis os a compositional function where: f⋅g = f( (g)x) ) to solve it I substitute (x^2 + 9) for all values of x in the equation g(x) = 2x^2-7x+5
f "of" g = 2(x^2+9)^2-7(x^2+9) + 5 = 2x^2 + 18 - 7x^2 - 63 + 5 = - 5x^2 - 40 f / g = 2x^2-7x+5 / x^2 + 9 Factorise top and bottom = (2x-5) (x-1) / (x+3)(x-3)
It's important to note that this formula is identical to that of constant speed. Average speed is measured in units of distance per time. Common units include miles per hour (mph), kilometers per hour (kph), meters per second (m/s), or feet per second

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