The area of a triangular sail is given by the expression 12bh, where b is the length of the base and h is the height. what is the area of a triangular sail in a model sailboat when b = 10 inches and h = 6 inches?

The water company charges a residential customer $41 for the first 3,000 gallons of water used and $1 for every 200 gallons used over 3000 gallons. if the water bill was $58 how many gallons of water were usedanswersa 3400 gallonsb 6000 gallonsc 6400 gallons d 7000 gallons