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Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

What is the reflection image of (5,-3) across the line y = -x?

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.