Ah, yes
if you start with P amount of something and the half life is h units (in years) and the time elapsed is t (in years) then the amount left is A
the equation is

so
given
h=1620
P=150
t=200
so


use your calculator
A≈137.69781917515g
about 138grams left
Answer:
<u>175.84</u>
Step-by-step explanation:
50.24+50.24=100.48
100.48+75.36=175.84
Answer:
12+4y
Step-by-step explanation:
12+3y+y=12+4y
Given that the dealer sells a dozen tires for $240, every 3-tire set costs $60. There are six 2-tire sets in a dozen. Thus, his total revenue should be $360. The total profit is the difference between the total revenue and the total cost. The answer is therefore, the first choice, $120.