The t-mobile one family plan includes four lines and unlimited
data, calls, and texts for $160.00 per month, including taxes
and fees. there is an activation fee of $80.00.
define the variable and write a function that represents this
situation

2 over 5 and 4 over 15

don’t know last one sorry

step-by-step explanation:

8987678

step-by-step explanation:

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

source:  

answer is  

d.

a circle

i got it down for you chief.