1 Which relation is not a function?

1) {(1,5),(2,6),(3,6),(4,7)}

2) {(4,7),(2,1),(−3,6),(3,4)}

3) {(−1,6),(1,3),(2,5),(1,7)}

4) {(−1,2),(0,5),(5,0),(2,−1)}

If square root x = -7, then x= -49 true or false

How do you write something in scientific notation?

In a young single person's monthly budget, $150 is spent on food, $175 is spent on housing, and $175 is spend on other items. suppose you drew a circle graph to represent this information, what percent of the graph represents housing?