Im very lonely crying i got dumped 2 times please cheer me up. im 12 and a boy

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers