Question: For an arithmetic sequence u1 = 12, and u10 = 52.5. a. What is the common difference of the sequence? b. Find the equation of

For an arithmetic sequence u1 = 12, and u10 = 52.5.
a. What is the common difference of the sequence?
b. Find the equation of the line through the points (1, 12) and (10, 52.5).
c. What is the relationship between 20a and 20b?

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