There are 6 milligrams of a radioactive substance in a lab in month 1. each month, half of the radioactive substance loses its radioactivity. which graph matches this situation? ( need answer asap)

Graph D.

Step-by-step explanation:

When a radioactive substance loses its radioactivity, reduction in its amount represents exponential sequence and the graph represents the exponential graph.

So graph number 1 is invalid which is representing a linear graph.

Now amount of the radioactive substance is 6 milligrams in month 1. So the point on graph should be (6, 1).

After 1 month it reduces to half 3 milligram in 2nd month and the point will be (3, 2).  

Similarly after 3rd and 4th month points will be (1.5, 3) and (0.75, 4).

These points have been plotted in graph number D only.

Therefore Graph D is the answer.

$650 per month plus utilities

step-by-step explanation:

just based on the info you gave, it would seem more cost effective to rent at $650 per month plus utilities.   if utilities are, in fact, $150 per month, your monthly living costs would be $800 as opposed to the other option of $825.

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation