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Math·Advanced Math·Nonlinear functions

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At the start, the pressure was 18 psi. It doubled every 29 minutes.

Which equation represents this situation, where $y$ is the pressure inside the container $t$ minutes after the start?

A

$y=18(2{)}^{t/29}$

B

$y=18(29{)}^{2t}$

C

$y=18(x+29{)}^2$

D

$y=18x^2+29$