Step-by-step explanation
A relation is any set of ordered pairs. A function is a set of ordered pairs where there is only one value of y for every value of x.
hope this helps ;-)
First, we should apply the present value of annuity formula. It is

and in this formula

is the present value of annuity factor.
Then, we can find the present value of the annuity by writing that,

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Answer:402.03
Step-by-step explanation:
Increasing by 5% is just multiplying by 1.05 then you repeat step for x amount of years
Answer:

Step-by-step explanation:
Written in: y = mx + b