Part A: Yes this is a function because there are no repeated x values. Each x value points to exactly one y output. You can graph each point and the graph will not fail the vertical line test.
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Part B: Plug x = 6 into the f(x) function given to get
f(x) = 7x-15
f(6) = 7*6-15
f(6) = 42-15
f(6) = 27
Now compare this with the table. According to the table, when x = 6, the value of y is 14. So the f(x) value is larger than the table value when x = 6
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Part C:
Replace f(x) with 6 and solve for x
f(x) = 7x-15
6 = 7x-15
6+15 = 7x-15+15
21 = 7x
7x = 21
7x/7 = 21/7
x = 3
So the final answer, for part C, is x = 3
You can put each into standard form to see whether they have the right value.
5.5·10⁴ = 55,000 ≠ 0.00055
The answer is .0029154519
Answer:
a(1)=−13
a(n)=a(n−1)+4
Find the
2nd2^{\text{nd}}
2
nd
2, start superscript, start text, n, d, end text, end superscript
term in the sequence⎩
⎪
⎪
⎨
⎪
⎪
⎧
a(1)=−13
a(n)=a(n−1)+4
Find the
2nd2^{\text{nd}}
2
nd
2, start superscript, start text, n, d, end text, end superscript
term in the sequence