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#20520

exponential

applications

medium

90 sec

The concentration of a certain chemical in a solution, in milligrams per liter, is given by the function $C (d) = 100 (2)^{\frac{d}{3}}$ , where $d$ is the number of days since the chemical was added. How many days will it take for the concentration of the chemical to reach 800 milligrams per liter?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.