SAT Math Practice Question #35679 - SATify | SATify
#35679
applications
exponential
hard
90 sec
A radioactive substance decays such that its mass is halved every 15 years. If a sample initially contains 800 grams of the substance, how many years will it take for the sample to decay to 100 grams?
• 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.
