Answer
20,10,5
Work Step by Step
You have y=40($\frac{1}{2}$$)^{x}$.Plug in x=1,2,3 to find the value of Y:
x=1:
y=40($\frac{1}{2}$$)^{1}$
y=40 $\times$ $\frac{1}{2}$
y=20
x=2:
y=40($\frac{1}{2}$$)^{2}$
y=40 $\times$ $\frac{1}{4}$
y=10
x=3:
y=40($\frac{1}{2}$$)^{3}$
y=40 $\times$ $\frac{1}{8}$
y=5
So we have (1,20)(2,10)(3,5)
