A medicine is applied to a burn on a patient's arm. The area of the burn in square centimeters decreases exponentially and is shown in the graph.
a. What fraction of the burn area remains each week?
b. Write an equation representing the area of the
burn, a, after i weeks.
area in square centimeters
No Ал ол No 0
c. What is the area of the burn after 7 weeks? Round
to three decimal places.
6
1 2 3 4 5
time in weeks