Medicine taken by a patient breaks down and eventually leaves the patient’s system. suppose a dose of 60 milligrams (mg) of medicine is given and it breaks down such that 20% of the medicine becomes ineffective every hour. how much of the 60 mg dose is still active after 3 hours, after 4.25 hours, after 6 hours?

after 3 hours :24mg left

after 4.25 hours:9 mg left

after 6 hours left

Step-by-step explanation:y for left mass of medicine

x for hour

y=60-20%*60 x   y=60-12x

1.y=60-12*3=60-36=24

2.y=60-12*4.25=60-51=9

3.y=60-12*6=-12<0 No medicine is left.

y=

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

my guess would be b and d, but i didn’t actually get out the pen and paper. lol