Aclass has 6 boys and 14 girls. what is the ratio in simplest form that compares number of boys to total number of students?
a. 6: 14
b.6: 20
c.3: 7
d. 3: 10

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.

Math it's appreciated. (picture provided)

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0