Here are three ways where There could be equal rows
3*12=36
4*9=36
6*6=36
First do $70(4). That would equal $280. Then do $280+$40=$320
The expression defines the given series for seven terms, i don't understand the question but i do know the sum which you should know to
15 + 19 + 23 = 57
Sorry
Answer:

Step-by-step explanation:
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