Asked by Emma

Substitute the numbers in x and solve.


1) 4/5^x

-2,-1,0,1,2


2) 2^x
-2,-1,0,1,2

Answers

Answered by Steve
plug and chug:

f(x) = 4/5^x
f(-1) = 4/5^-1 = 4/(1/5) = 4*5 = 20
f(0) = 4/5^0 = 4/1 = 4
f(1) = 4/5^1 = 4/5

f(x) = 2^x

f(-1) = 2^-1 = 1/2
f(1) = 2^1 = 2

If you have troubles with the other values, come on back and show where you get stuck.
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