The general term of an arithmetic sequence is
an = a1 +(n-1)d
Your sequence has first term a1 = 11 and common difference d = 4. Then the general term is
an = 11 + (n-1)*4
The simplest form of the general term is
an = 7 + 4n
Answer:
8 weeks is the right APEX ANSWER

The vertex is at (0,-5), therefore the range goes from (-infinity, - 5]
This is my work. Also 2/3 is a repeating decimal so it’s actually 0.6...
B.)10 inches
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you need to plug in 10
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thats if you don't know what to do
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the easy way