Acomputer depreciates at a rate of 1/2 the original value every two years it's a computer now cost $75 after six years how much did it cost when you bought it new

Find the sum of the following series. round to the nearest hundredth if necessary.

Awall map has a scale of 128 miles = 6 inches. the distance between springfield and lakeview is 2 feet on the map. what is the actual distance between springfield and lakeview? 384 miles 512 miles 1.13 miles 42.7 miles

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?