# Hard SAT Math Question 97 — Video Explanation | 1600.now

Source: https://1600.now/hard/97

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97

The function $g$ is defined by $g(x) = 67(1.21)^x$. For any positive integer $a$, the value of $g(a)$ is $p\%$ more than the value of $g(a - 1)$. What is the value of $p\%$?

A

$67$

B

$23$

C

$21$

D

$79$