what is the total active soil force $F_a?($hint: summation of active earth pressure$)$

$2\mathrm{.}6$kips

$3\mathrm{.}3$ kips

$1\mathrm{.}4$ kips

$1\mathrm{.}9$kips

$7$ points

what is the factor of safety against overturning for this retaining wall?

$1\mathrm{.}1$

$0\mathrm{.}8$

$1\mathrm{.}7$

$1\mathrm{.}5$

$7$ points

what is the factor of safety against sliding? $($assuming full friction: $=tan{}^{\text{'}})$

$1\mathrm{.}59$

$1\mathrm{.}92$

$1\mathrm{.}37$

$2\mathrm{.}1$