Jay can buy a stereo either online or at a local store. If he buys
online, he gets a 15% discount, but has to pay a $12 shipping fee. At
the local store, the stereo is not on sale, but there is no shipping fee.
For what regular prices is it cheaper for Jay to buy the stereo online?

Question

Jay can buy a stereo either online or at a local store. If he buys
online, he gets a 15% discount, but has to pay a $12 shipping fee. At
the local store, the stereo is not on sale, but there is no shipping fee.
For what regular prices is it cheaper for Jay to buy the stereo online?

ragingsquirrel · Answer

S=.85x+12
L=x
x>.85x+12
.15x>12
x>80
Anything equal to or greater than $80