Which statement$($s$)$ on markup formulae is $($are$)$ correct?

Group of answer choices

Formula $1$ is equivalent to Formula $4,$ both calculate cost.

Formula $1$ is equivalent to Formula $2,$ both calculate cost.

Formula $2$ is equivalent to Formula $3,$ both calculate selling price.

Formula $3$ is equivalent to Formula $4,$ both calculate selling price.

F$1,$F$4$are equivalent.$$F$2,$F$3$are equivalent.