Kelly pedaleo 2 3/5 km a la librería. Si Kelly pedaleo por 1/4 h ¿cuál era su velocidad?

Nell has a sales clerk job that pays $12 per hour for regular gas work hours. she gets double time for any hours over 40 that she works in a week. how many hours did nell work if her weekly pay was $744

Ineed i been stuck on this question since yesterday

What does the sign of the slope tell you about a line?