Question

a child takes 100 milligrams of an antibiotic that decreases by 30% per hour. give the equation that represents this data

Answer 1

The equation would be: y = 100(0.7)^x

This is an example of an exponential decay equation. They are in the form of y = ab^x.

A is the starting value.
B is the rate of change. In this case, we are using 0.7 or 70% because the amount is decreasing by 30%. 100% - 30% = 70%