Answer:
210
Step-by-step explanation:
a1=15
d=3
n=40
=a1+(n-1)5
=15+(40-1)5
=15+(39)5
=15+195
=210
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Answers & Comments
Answer:
210
Step-by-step explanation:
a1=15
d=3
n=40
=a1+(n-1)5
=15+(40-1)5
=15+(39)5
=15+195
=210