Answer:
21
Step-by-step explanation:
This is an arithmetic sequence with a₁ (first term) = 10.5 and d (common difference) = 11 - 10.5 = 0.5
Explicit formula for arithmetic sequences: aₙ = a₁ + (n - 1) * d
Therefore, aₙ = 10.5 + (n - 1) * 0.5 = 0.5n + 10 so a₂₂ = 0.5 * 22 + 10 = 21.
To tell if it is not a function you do a vertical line test. A vertical line test is when you draw a vertical line to test if the ordered pairs are a function or not.If the vertical line intersects the plotted points once it is a function and if the vertical line intersects the plotted points more than once it is not a function. An example of ordered pairs that are not a function is (2,6) and (2,8).
Answer:
The plan is:
A fixed cost of $50 per month.
An extra of $15 per GB used over the limit of 2B.
We can write this as a linear equation:
C(x) = $15*x + $50
C(x) is the monthly cost, and x is the number of GB that she used over the limit.
Then, if she used 3GB over the limit, we should replace x by 3.
C(3) = $15*3 + $50 = $45 + $50 = $95.
And the answer to the second question was already found, if she used xx GB in the month, then we have:
C(xx) = $15*xx + $50
(we replaced the x in the general equation by xx)
Answer:
x=10
Step-by-step explanation:
