Help please.

Ratio of girls to total number of students: 4:12

Step-by-step explanation:

There are four girls, and eight boys.

In all there are 12 students.

So the ratio of girls to total number of students taking swimming lessons is 4:12

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

you can download it here

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.