Write the following as a base-10 numeral in standard form.
4 x 105 + 2 x 102 + 7 =

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

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Evaluate the expression. (9 + 5)(3 + 2)0