How to solve a word problem if 15 dolls cost 468 what do 35 dolls cost

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

Someone answer asap for ! the boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a. e = 2b - 212 b. b = 2e - 212 c. e = -2b + 212 d. b = -2e + 212

Find solution of the linear equation y = 2/3x + 1/3