This function is written for you

$|$#

$($define $($replace$-$all$-$tail lst id with$)$

$($replace$-$all$-$helper lst id with $\text{'}()))$

#$|$

$($replace$-$all$-$helper lst id with acc$)->$ list?

lst: list?

A list of values

id: symbol?

A value to be replaced in the list

with: symbol?

A value that will take the place of $`$id$`$ in $`$lst$`$

acc: list?

An accumulator

Helper function to replace$-$all$-$tail.

$|$#

$($define$/$match $($replace$-$all$-$helper lst id with acc$)$

$[(\text{'}()$ id with acc$)\text{'}()]$

; $...$ you may need more patterns $...$

$[(($cons first rest$)$ id with acc$)($if $($equal$?$ first id$)($replace$-$all$-$helper rest id with $($list acc with$))($replace$-$all$-$helper rest id with $($list acc first$)))]$

$)$

$($module$+$ test

$($test$-$equal? "replace$-$all: empty list"

$($replace$-$all $\text{'}()\text{'}$a $\text{'}$b$)$

$\text{'}())$

$($test$-$equal? "replace$-$all: some replacement"

$($replace$-$all $\text{'}($b a c a$)\text{'}$a $\text{'}$b$)$

$\text{'}($b b c b$))$

replace$-$all$-$tail: some replacement

$.$ FAILURE

name: check$-$equal?

location: w$02$lab.rkt:$97$:$2$

actual: $\text{'}()$

expected: $\text{'}($b b c b$)$

why is the code failing the second test