Find the next three terms of the arithmetic sequence: a1=2andd=13

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?

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

How do i multiply two digit numbers