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#37809

data analysis

hard

90 sec

The concentration of a certain chemical in a solution, in milligrams per liter, can be modeled by the function $C (t) = 150 (0.95)^{t}$ , where $t$ is the time in hours after the solution was prepared. What was the initial concentration of the chemical in the solution when it was prepared?

• 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.