57 (1.31) ^t interpret the meaning of the expression

A. The initial number of bacteria is 57 and the growth rate is 3.1% per hour

B. The initial number of bacteria is 57 and the growth rate is 31% per hour

C. the initial number of bacteria is 131 and the growth rate is 5.7% per hour

D. the initial number of bacteria is 131 and the growth rate is 57% per hour

Question

Mathematics

Chocolate

14 January, 06:36

57 (1.31) ^t interpret the meaning of the expression

A. The initial number of bacteria is 57 and the growth rate is 3.1% per hour

B. The initial number of bacteria is 57 and the growth rate is 31% per hour

C. the initial number of bacteria is 131 and the growth rate is 5.7% per hour

D. the initial number of bacteria is 131 and the growth rate is 57% per hour

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Answers (2)

Know the Answer?

Zayne Forbes · Answer 1

B. The initial number of bacteria is 57 and the growth rate is 31% per hour

57 is the initial all by itself and 31 is the growth rate. Don't really know why and how to explain the Percentage application but I got the answer correct on my test so ...

Essence Pacheco · Answer 2

For this case we have an equation of the form:

y = A * (b) ^ t

Where,

A: initial amount

b: growth rate

t: time

We then have the following equation:

y = 57 (1.31) ^ t

The initial number of bacteria is 57 and the growth rate is 31% per hour.

Answer:

B. The initial number of bacteria is 57 and the growth rate is 31% per hour