Is it a function and domain and range:

{(2,-4),(6,-2),(4,-2),(5,-4,(-8,- 6)}

State whether weight is a function of height for the six students and explain. a. yes, height is a function of weight because two students weigh 165 pounds but have different heights. b. no, height is not a function of weight because two students weigh 165 pounds but have different heights. c. yes, weight is a function of height because for each value of height there is one corresponding value of weight. d. no, weight is not a function of height because there is not enough data to determine a function.

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account