aaron has an annuity that pays him $9200 at the beginning of each year. assume the economy will grow at a rate of 3.2% annually. what is the value of the annuity if he received it now instead of over a period of 10 years?
a. $80,168
b. $77,682.0
c. $106,444.30
d. $109,850.52
explain and show the formula i want to know what i'm actually doing

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At store a, erasers are sold individually. the cost y of x erasers is represented by the equation y=0.75x. the costs of erasers at store b are shown in the graph.