Which expression is equivalent to the given expression

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

Hassan bought a package of tofu. the temperature of the tofu was 14° celsius when hassan put the package into the freezer. he left the tofu in the freezer until it reached –19° celsius. which expressions explain how to find the change in temperature, in degrees celsius, of the package of tofu? select three that apply.

Using the rise/run counting method, the slope of the line is