What is 1.5 repeated as a fraction

Classify the following triangle check all that apply

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?

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps