What do you mean?.. Do you mean: e.g. How many tens are in 12.476? So you basically have the 70 as ten right? Well you need to count from the first number (12). So the answer to that example would be 1247. Forget about the decimal point.
Y=-5x -2 should be the equation I’ll go check tho
P,Q,R can't be 0, because their product is nonzero. Either of S and T could be 0, but the third one only works if S is 0.
In order from least to greatest the soaps would he 1. bright wash
2.lots of suds
3.spotless soap
4.lemon broght