Gretchen invested $1,000 in a certificate of deposit (CD) that paid interest at a
rate of 9% per year. How much was the
CD worth at the end of 3 years?

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?

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

If a and b are real numbers, then |a-b| is always, sometimes or never equal to |b-a| ?