Tara has k boxes of pencils. there are 10 pencils in each box. how many pencils does tara have?

1foot = 12 inches; 1 yard = 3 feet

Name the most appropriate metric unit for each measurement

Aremote-controlled boat can travel at 4 feet per second in calm water. the boat traveled 48 feet with the current, and then it traveled 16 feet against the current in the same amount of time. how fast is the current?