The answer for this question is letter c
Answer:
27/70
Step-by-step explanation:
This is simple: First, you multiply the numerators. 3x9 is 27. That is the numerator to your answer.
Next, you multiply the denominators. 7x10 is 70. That's the denominator to the answer.
Put them together and you get 27/70.
Hope I helped!!!
Hello!
A) <span>
The mass of the air freshener A decreases by 3.2 grams each day. Define a function, f, to represent this situation.In this function, the mass of the air freshener A (m)
is the dependent variable and the days (t) and the initial amount of the air freshener A (mi) are the
independent variables. If the mass decreases by a fixed amount each day, you only have to multiply this amount by the number of days:
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<span>
B) The mass of the air freshener B decreases by 3.2% each day. Define a function, g, to represent this situation.
</span>
This function is trickier since there isn't a fixed amount of decreasing. Instead,
the rate of decreasing depends on the initial amount of the freshener (mi). You have to include this initial amount in the equation to correctly model it. This is how you do it:

Have a nice day!
Answer:
3137
Step-by-step explanation:
The decay factor is 400/110,000 = 1/275 in 30 hours. Assuming an exponential decay, the equation for the number remaining can be ...
n(t) = 110,000·(1/275)^(t/30)
Then after 19 hours, the number remaining is ...
n(19) = 110,000·(1/275)^(19/30) ≈ 3137
There will be about 3137 bacteria after 19 hours.