exam Maths Puzzle Numerical Ability

a car uses 8 gallons of gas on a trip of 256 miles. how much gas will a trip of 480 require?

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exam Other Question

let f(x)=x^3-8x^2+17x-9. Use the factor theorem to find another solution to f(x)-f(1)=0, besides x=1 What is the answer in standard form and the center and radius of this circle equation?
3x^2+3y^2-18x+6y=18