the amount of a 10 mg dose of a certain antibiotic decreases in your bloodstream at the rate of 16% per hour. write an exponential decay function to model this situation. then find the amount the antibiotic will decrease in 4 hours

the function makes a strait line horizontally with no x intercept but a y intercept at 9.

where does the z at is it on the x axes or on the y axes any way if it is on the y axes put it horizontally and if it is on the x axes put it vertically