Factorize 3x² + 7xy - 6y². Evaluate the expression in (a) above if x = 4 and y = 3.

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Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?