14.4 is your answer for y
The increase is an exponential increase in a multiplier

and as decimal 1.0045
Final Value = Initial Value ×

Final value =

Final value = 393 mg (to the nearest whole number)
Half life = 0.5 years
Final value =

=301 mg
Answer:
Dividing two fractions is the same as multiplying the first fraction by the reciprocal of the second fraction.