Let's formulate an equation first. For exponential growth, we follow the formula. b = 800, r - 0.027. Hence,
y = 800(1+0.027)^t
Then, at t = 21, y will be determined
y = 800 (1+0.027)^21
y = 1399.81 = 1400
Thus, the amount of bacteria present after 21 hours is 1400.
Answer:
D
Step-by-step explanation:
The answer is D, because when you divide x by a negative the sign changes
<span>12(5y+4)
= 12(5y) + 12(4)
= 60y + 48
hope it helps</span>
Need a picture! Then I will be happy to help :
