i do believe the first one is D but im not sure about the 2nd <span />
Answer:
$1.88
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
clearly, the equation has to allow t=0, and for that point we need to get 100% (of carbon-14) as result.
and so we also see, that the function calculates the % of the remaining carbon-14.
so, we need the desired outcome 60(%),
because 60 = 100 - 40.
and again, we need a function that shows t=0.
the only answer option fulfilling both criteria is A.
B divides in the exponent by t, so t=0 is not in the domain of the function.
and C and D aim for the wrong remaining percentage.

As
, the
term will converge to 0, so the limit is 2 (B).
Hey,
Depends on what you want us to do with the equation.
If you want us to simplify the expression, here you go:

.
Let me know if this isn't what you need, and I'll try to help the best I can.
Cheers,
Izzy