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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

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?