Problem PageQuestion The area covered by a certain population of bacteria increases according to a continuous exponential growth model. Suppose that a sample culture has an initial area of and an observed doubling time of days. (a)Let be the time (in days) passed, and let be the area of the sample at time . Write a formula relating to . Use exact expressions to fill in the missing parts of the formula. Do not use approximations. (b)What will the area of the sample be in days

a) The relation between y and t is

b) y(6) = 19.8 mm^2

Step-by-step explanation:

The question is incomplete: "The area covered by a certain population of bacteria increases according to a continuous exponential growth model. Suppose that a sample culture has an initial area of 8.6 mm^2 and an observed doubling time of 5 days. (a)Let be the time (in days) passed, and let y be the area of the sample at time . Write a formula relating y to t. Use exact expressions to fill in the missing parts of the formula. Do not use approximations. (b)What will the area of the sample be in 6 days?

As the area covered increases according to a continous growth model, we start with these relation:

We know that the initial area y(0) is 8.6. Then:

We also know that the area duplicates after 5 days.

Then, the model becomes:

b) We have to calculate y(6)

part 1 answer = 8

part 2 answer = 72

step-by-step explanation:

part 1 explanation = add all of the numbers, then divide by how many numbers you have. so, 200/25 = 8.

part 2 explanation = not gonna lie, this is hard to explain, so just google how to do it.

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9