Question

which of these is an exponential growth function?
A)y=4.2^x
B)y=8(0.2^x)
C)y=0.25^x
D)y=2/7^x

Answer 1

plug them all into a calc

Answer 2

and wich ever one has a curved graph is it

Answer 3

curve *

Answer 4

i dont have a graphing cal

Answer 5

its A)

Answer 6

thank you!:) to everyone who helped

Answer 7

medal ;-;

Answer 8

lol

Answer 9

lol

Answer 10

all equations could model growth or decay, it is just dependent on the domain of x

Answer 11

thank you

Answer 12

so when you see you teacher... ask why he doesn't give a domain for x.... to make it easier to answer the question...

as an example

in the 2nd choice, if x = -3 you are looking at

\[8 \times0.2^{-3} = 1000 \] which sees larger than when \[8 \times 0.2^0 = 8\]