Which ratio is equivalent to the unit rate 30 miles 1 gallon ? how was the unit rate transformed into the equivalent ratio?

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal