Question

Help Please

Answer 1

If I start with a population of 2 roaches, and I know that the population will be multiplied by 40 in 3 hours, what is the percentage rate of growth in one hour?

Answer 2

@518nad

Answer 3

@Directrix

Answer 4

@3mar

Answer 5

multiplied by 40 in 3 hours mean that will be 80 ?

Answer 6

Yep

Answer 7

ok. so start with 2 and after 3 h will be 80
so just use the rule of 3 simple and will get easy the right answer sure

Answer 8

3 h growth 80-2=78
1 h ----------- x
-------------------
x = 1*78/3 = 78/3 = ?

Answer 9

3mar your opinion about this please ? ty.

Answer 10

Thank you for your confidence, @jhonyy9.

Answer 11

I think I was supposed to use the equation "b^(1/k)-1=r"
But I am not sure because it wants me to find one year when I am given three.

Answer 12

why year when there wrote hours ?

Answer 13

Typo, I meant to say hours.