Simplify the expression

(5x^4-3x^3+6x) - (3x^3+11x^2-8x)

5x^4-3x^3+6x-3x^3+11x^2-8x

5x^4-6x^3-11x^2+14x

is this correct?

The local police department must write, on average, 5 tickets a day to keep department revenues at budgeted levels. suppose the number of tickets written per day follows a poisson distribution with a mean of 6.5 tickets per day.

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Which equation represents a line which a perpendicular to the line y=4x-7?

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How many ounces (oz) are equal to 4 cups?