You need a length and width for it
Let Karen works x hours baby sitting
So, she worked (18-x) hours giving music lessons
So,
According to question
5x + 12(18-x)=139
This gives
7*x=77
x=11
So,
<span>Karen worked <em>11 hours baby sitting </em>and (18-11)=7 hours giving music lessons</span>
The graph is an open circle at -1 with the line going towards the positive numbers.
I thinks it’s 3 because 21-12=9 so you spent 9 dollars 9/3=3
Answer:

Step-by-step explanation:
Assuming the "x" to be an exponent:



