Answer:
-27.2
Step-by-step explanation:
Hello! There are a few things that determine whether or not something is a function. In this case, to determine whether a relation is a function, we look at the domains, which are the x-coordinates, the first number of the pair. If the number occurs in the x-coordinate for more than one pair in a relation, then it's not a function. If a number only occurs as an x-coordinate once in the relation, then it's a function. In other words, they each have only one y-coordinate in the relation. For this question, the first, second, and third relations are functions. The fourth one is not a function, because the 3 has more than one y-coordinate, so it occurs as an x-coordinate more than once. Here are the answers easier to read.
1st : yes
2nd: yes
3rd: yes
4th: no
Answer:
10x+4b+3
Step-by-step explanation:
x+x+x+x+x+x+x+x+x+x+b+b+b+b+3
There are 10 x
4 b
and one number
10x+4b+3
Step-by-step explanation:
<u>John</u>
1hour=x
6x=150
X=150÷6=25
John earns 25 dollars per hour
<u>Peter</u>
<u>1hour=x </u>
<u>8</u><u>x=</u><u>160</u>
<u>X=</u><u>160</u><u>÷</u><u>8</u><u>=</u><u>20</u><u> </u>
- Peter earns less than <u>John</u><u> </u>
Answer:
128 feet squared
Step-by-step explanation:
you multiply 4 by 4 to get 16 ,
then you multiply 7 by 4 and get 28,
also multiply 28 by 4 and get 112 ,
finally add 112 and 16 to get 128
