Zach invests ​$20 in the stock market at the beginning of the week. He decides to invest an additional ​$30 at the end of the week. He loses 40​% of his total investment. How much money does Zach ​lose?

Name the most appropriate metric unit for each measurement

The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.