Answer:
Son
Explanation:
Just got 100%, but further explanation: Es and esta are both easy to rule out, as neither of them refers to "they" (Alan y Enrique), and estan does not work because of the weird rules. Tbh I feel like you just have to memorize them except in some cases where one just clearly makes more sense than the other.
They are inverse of logarithmic equations. The value of b to the nearest tenth is 0.1
<h3>Exponential equations</h3>
They are inverse of logarithmic equations. Given the exponential function that modelled the penicillin concentration, in micrograms per milliliter as shown:
If the value of P(t) is 10, hence;
Take the ln of both sides
ln0.05 = 6/5 lnb
-2.995 = 1.2 ln b
lnb = -2.495
b = e^-2.495
b = 0.08
Hence the value of b to the nearest tenth is 0.1
Learn more on exponential function here; brainly.com/question/2456547
#SPJ1
Answer: Oxygen (I don’t see the options)
Explanation: A greenhouse gas is a gas that produces heat as it builds up in the atmosphere. It also becomes trapped in the atmosphere, so it cannot escape the inner layers of Earth's atmosphere. As a result, these gases cause pollution because they dirty up the atmosphere.
Carbon dioxide is a main greenhouse gas, found in car exhaust pipes.
Methane and nitrous oxide is another type of greenhouse gas.
*Oxygen is the only clean gas out there because we need it to survive. Therefore, the only gas that is not a greenhouse gas*
