Question

Check my answer.. I believe its 2 months

Answer 1

Two separate bacteria populations grow each month and are represented by the functions f(x) = 3x and g(x) = 7x + 6. In what month is the f(x) population greater than the g(x) population?

Month 1
Month 2
Month 3
Month 4

Answer 2

so f(x) = 3x if x= 2 what is 3x?
g(x) = 7x+ 6 if x=2 what is 7x + 6

so 2 is not the right answer

I think you must have written it wrong because for positive counts of the months 7x+6 is always greater than 3x

Answer 3

@MrNood ohh okay. Would it be 3 months? eh

Answer 4

I think you must have written it wrong because for positive counts of the months 7x+6 is always greater than 3x

Answer 5

I think you must have written THE QUESTION wrong because for positive counts of the months 7x+6 is always greater than 3x

Answer 6

@MrNood No.. I just copied and pasted it into the question box

Answer 7

well - look at it

if x is positive then 7x is ALWAYS going to be > 3x (even before you add 6)
None of those answers is correct - so the question must be wrong

are you sure it's not 7x-6?

Answer 8

One sec.. Maybe some other math words got mixed in.

Answer 9

Here is the question: Two separate bacteria populations grow each month and are represented by the functions f(x) = 3x and g(x) = 7x + 6. In what month is the f(x) population greater than the g(x) population?

Answer 10

if x is positive then 7x is ALWAYS going to be > 3x (even before you add 6)
None of those answers is correct

Answer 11

@MrNood hm I see what you mean

Answer 12

most population growth question involve 'exponential' are you sure that the copy has not missed out some formatting
eg
\[3^{x}\]

Answer 13

@MrNood I am pretty sure

Answer 14

@celinegirl please post a screenshot of the full problem. There may be something missing but I'm not sure

Answer 15

Okay... here:

Answer 16

Thanks

Answer 17

Ok so f(x) isn't 3x it's 3^x

Answer 18

if you plug in x = 2 into f(x) = 3^x, what do you get?

Answer 19

@jim_thompson5910 9?

Answer 20

Aha - as I suspected! :-)

Now work out f(x) for x = 2, 3 and 4

then work out g(x) for x = 1,2,3,4

you will see when it is GREATER than g(x)