The graph shows the function f(x) = 2*
What is the value of xwhen f(x) = 8?
2 answers:
Answer:
A. 3
Step-by-step explanation:
y = 2^x
y = 8
Plug y as 8 in the first equation.
8 = 2^x
Make the left side of the equation with a base of 2.
2^3 = 2^x
Cancel bases.
3 = x
Answer:
x=3
Step-by-step explanation:
f(x) = 2^x
Let f(x) =8
8 = 2^x
Rewriting 8 as 2^3
2^3 = 2^x
The bases are the same so the exponents are the same
3=x
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