Please help I’ll mark you as brainliest if correct!

Answer:
[tex]2^{99}[/tex]
Step-by-step explanation:
This is a geometric sequence with first term 1 and common ratio 2. Therefore,
[tex]a_n=2^{n-1}[/tex]
Substituting in n=100,
[tex]a_{100}=2^{99}[/tex]