Answer: x = 6
x+x=19-7
2x=12
Hence the answer is x=6
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Answer: 
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n starts at 1, and n is a positive whole number (1,2,3,...)
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Explanation:
The sequence is arithmetic with first term 40 and common difference 10. Meaning we add 10 to each term to get the next one.
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a1 = 40 = first term
d = 10 = common difference

is the general nth term of this arithmetic sequence
Plug in n = 1 and you should get 
Plug in n = 2 and you should get 
and so on
Answer
m=5
x=100
so it will be y=5x+100
Step-by-step explanation:
Answer:

Step-by-step explanation:
After x=2, we see that the change in y over the change in x is positive since both variables increase with each other, so
is where the function is increasing.