Atrain travels in a straight path at a steady speed of 1.25 mi./m at noon the train is 100 miles from the starting point express the distance d from the starting point as a function of time x in minutes afternoon

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.