Question

Find the 25th term of the arithmetic sequence with first term 7 and common difference -2

Answer 1

Use the formula
`a_1+(n-1)d` where n is the number of terms,
`a_1` is the first term and d is the common difference. You Should get:
`7+(25-1)(-2) = 7+24(-2) = 7-48 = \boxed{-41}`.