Which number is 300% of the difference between 23 and 27?

Use set buikder notation to represent the following set: {, -2, -1, 0}

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)