It all started by increasing the number of the years each year people buy Starbucks and every year it increasing <span />
Answer:
Bob got that by calculating the change amount of money in Imamu's account after of a year (4 months).
Step-by-step explanation:
You know that Imamu pays $30 each month for his gym membership.
Since there are 12 months in a year, you can find the the number of months that of a year represents:
Now, in order to find the change amount of money in his account after (8 months), you must solve the following multiplication:
Bob chose (Option A) as the correct answer, but that is incorrect, because he got it by calculating the change amount of money in Imamu's account after of a year (4 months).
Answer:
35.4 years
Step-by-step explanation:
The annual consumption (in billions of units) is described by the exponential function ...
f(t) = 45.5·1.026^t
The accumulated consumption is described by the integral ...
We want to find t such that the value of this integral is 2625, the estimated oil reserves.
2625 = 45.5/ln(1.026)·(1.026^t -1)
2625·ln(1.026)/45.5 +1 = 1.026^t ≈ 1.480832 +1 = 1.026^t
Taking natural logs, we have ...
ln(2.480832) = t·ln(1.026)
t ≈ ln(2.480832)/ln(1.026) ≈ 35.398
After about 35.4 years, the oil reserves will run out.
Yes, all of your answers are correct, the answer for the second one I think is 5.
hope this helps....