Answer: 13+9 = 22
Step-by-step explanation:
There is not a picture.. I need a picture to see what you are talking about..
Answer: B
Step-by-step explanation:
Answer:
Your heart rate would be 72 beats per minute
Step-by-step explanation:
You need to get 60 minutes so If you multiply 15 by 4, its 60. Do the same for 18 and your heart rate is 72 beats per minute
Answer: Choice C. 
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Explanation:
The domain is the set of all allowed x inputs.
Here we see that x = -3 is the smallest x value possible as it is from the left-most point. The graph goes on forever to the right, so there is no largest x value. Effectively infinity is the largest x value even though infinity is not a number.
We can say the domain is
which can be simplified to
or 
In short: x can be -3 or larger.