116/16=68/Z solve for Z please answer Asap

Solve: 3x+y=6 4x-2y=18 show all work !

The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse

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