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Subscriptions to a popular fashion magazine have gone down by a consistent percentage each year and can be modeled by the function y = 42,000(0.96)t. what does the value 42,000 represent in the function?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale