David charges $15 plus $5.50 per hour to mow lawns arie charges $12 plus $6.25 per hour to mow lawns. in what situation is aries charge greater than or equal to david’s charge?

What is the length of an with endpoints a 3,2 and b 8,14

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.

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.