Now I'm really confused here

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.

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

How can (square root of 25) ^2 be rewritten?