Normally a playstation costs 500$,but you only want to pay 450$.how much discount(in percents)do you want

Suppose that x and y are both differentiable functions of t and are related by the given equation. use implicit differentiation with respect to t to determine startfraction dy over dt endfraction in terms of x, y, and startfraction dx over dt endfraction .

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Find the difference (8ab+a+2) - (3ab+6)