If adam buys 5 snakes at 20% off and each snake costs s dollars, which expression is not equivalent to the situation stated? a) 4s v) 5s − 0.20(5s) c) 5s − 0.20s d) 5s − 1sif adam buys 5 snakes at 20% off and each snake costs s dollars, which expression is not equivalent to the situation stated? a) 4s v) 5s − 0.20(5s) c) 5s − 0.20s d) 5s − 1s