Solve one of these problems. a) How much would a family's $46.99 meal at a restaurant cost if
they add 13% sales tax and then a 15% tip?
(show your work please)

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?

Two lines parallel to the same plane are parallel to eachother

How is working backward similar to solving an equation?