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tigry1 [53]
3 years ago
7

A bakery sells packages of 10 bagels for $3.69. If the backery starts selling that bagels in packages of 12, how much would you

expect a package of 12 to cost?
Mathematics
1 answer:
andreev551 [17]3 years ago
4 0

Answer:

$4.43

Step-by-step explanation:

10 bagels cost $3.69. 1 bagel costs $3.69/10=$0.369

12 bagels cost $0.369×12=$4.43

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The doubling period of a bacterial population is 20 20 minutes. At time t = 100 t=100 minutes, the bacterial population was 9000
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Answer:

The initial population was 2810

The bacterial population after 5 hours will be 92335548

Step-by-step explanation:

The bacterial population growth formula is:

P = P_0 \times e^{rt}

where P is the population after time t, P_0 is the starting population, i.e. when t = 0, r is the rate of growth in % and t is time in hours

Data: The doubling period of a bacterial population is 20 minutes (1/3 hour). Replacing this information in the formula we get:

2 P_0 = P_0 \times e^{r 1/3}

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Data: At time t = 100 minutes (5/3 hours), the bacterial population was 90000. Replacing this information in the formula we get:

90000 = P_0 \times e^{2.08 \; 5/3}

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Data: the initial population got above and t = 5 hours. Replacing this information in the formula we get:

P = 2810 \times e^{2.08 \; 5}

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