408 round to the nearest tenth: 410
N + d = 20 (there are a total of 20 nickels and dimes).05n + .1d = 1.4 (total change equals $1.40)
845 miles / 13 hours = 65 miles per hour
65 miles per hour x 11 hours = 715 miles
For every side you just add 90 to your equation. so #4 would be 360-125-125-55=(55)
