Amother is 1 3/4 times as tall as her son. her son is 3 feet tall. how tall is the mother?

Alaptop computer is purchased for $1350 . after each year, the resale value decreases by 30% . what will the resale value be after 5 years?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.