Question

Given the exponential function A(x) = P(1 + r)x, what value for r will make the function a growth function?
@shamil98 @ranga

Answer 1

Don't know this one.

Answer 2

@idku

Answer 3

If the 1+x is greater than 1, then it's a growth function.

For growth,
1+x > 1

If 1+x is less than 1, it's a decay function.

For decay,
1+x < 1

Answer 4

r = −2.1

r = −0.1

r = 0

r = 2.1
these are the options @agent0smith

Answer 5

Which of those values make
1 + x > 1
true?

Answer 6

Well read what I wrote above, and see if you can figure it out!

Answer 7

is it 0 @agent0smith

Answer 8

Just realized it should be 1+r not 1+x, but still. Shouldn't be hard to decide which numbers will make it more than 1...

you can do a few examples to help if you don't understand what we wrote above:

if r = 0.5, then

1 + 0.5 = 1.5

if r = -0.3
1 - 0.3 = 0.7

Answer 9

if r=0
1 + 0 = 1

Answer 10

-2.1

Answer 11

Are you just guessing?

Answer 12

You need 1 + r to be bigger than 1, right?

If r=-2.1, then what is 1 - 2.1 equal to?

Answer 13

ohh so it would be 2.1

Answer 14

Yes, r should be positive to make (1+r) > 1 and that will be a growth function.