Situation: a 15 gram sample of a substance that's a by-product of fireworks has a k-value of 0.1405. n noe no initial mass (at time 0) n mass at time t k a positive constant that depends on the substance itself and on the units used to measure time t time, in days

Your answer is 4.9.
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Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.