two cars start at the same time, but travel In opposite direction. one car's average speed is 20 miles per hour. at the end of 4 hours, the two cars are 280 miles apart. find the average speed in mph of the car.

What could explain what happened when the time was equal to 120 minutes

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.

Find the domain and range of the following function f(x) = 51x - 21+ 4