Question

Which exponential function goes through the points (1, 16) and (4, 128)?

f(x) = 4(4)x
f(x) = 8(2)x
f(x) = 8(2)−x
f(x) = 4(4)−x

Answer 1

@DanJS

Answer 2

@AloneS

Answer 3

I think b

Answer 4

so you think it's c?/

Answer 5

ooops i mean b xD

Answer 6

eah I believe your right !!! :)

Answer 7

yes

Answer 8

Thank you

Answer 9

xD YOU WELCOME :)

Answer 10

Tthis one?

Answer 11

since they actually gave you choices, you can just test which one works for those points,
but,

there is a way you probably learned to solve for the constants in
y = A*B^X

2 data points given for (x,y) can set up 2 equations in terms of A and B

Answer 12

so is it right?? @DanJS or maybe I made a mistake??

Answer 13

y = a * b^x

when x=0, y= a

each increase in x by 1 will multiply 'a' by the 'b' base.

Answer 14

x= 0 , 1 ....

y = a, a*b , a*b*b, a*b*b*b... exe