Suppose you are saving money for a new cell phone. at week 0 you have $20 and at week 10 you have $100. if y represents the amount of money you have saved and x represents the number of weeks, find and interpret the slope of the linear equation. a. 1/8 ; $8 is put away each week. b. 10; $10 is put away each week. c. 8; $8 is put away each week. d. 1/10; $10 is put away each week