Seats

Seats in the sports hall are organized so that each subsequent row has five more seats. The First has ten seats. How many seats are:

a) in the eighth row
b) in the eighteenth row

Final Answer:

a8 =  45
a18 =  95

Step-by-step explanation:

d=5 a1=10  a8=a1+d (81)=10+5 (81)=45
a18=a1+d (181)=10+5 (181)=95



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You need to know the following knowledge to solve this word math problem:

algebraGrade of the word problem

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