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suter [353]
3 years ago
13

The explicit rule for an arithmetic sequence is f(n) = 7 + 4(n − 1).what are the fourth and fortieth terms?

Mathematics
1 answer:
vladimir1956 [14]3 years ago
8 0
F(4) = 7+4(4-1)
f(4) = 7+4(3)
f(4) = 7+12
f(4) = 19
The forth term is 19 

f(40) = 7+4(40-1)
f(40) = 7+4(39)
f(40) = 7+156
f(40) = 163
The fortieth term is 163 
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