Michael visited his grandparents. the total distance was 280 miles. by train, he could travel 90 miles per hour. by bus he could travel 60 miles per hour. how much time could michael save by taking the train?

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

How many lines can be drawn through points j and k? 0 1 2 3