Do what you are doing in class but make up your own real-life situations
That is easy you do the addition and then what ever sign had the bigger number is the number the answer gets
Step-by-step explanation:
- x+x+x=65
- 3x=65
- x=65/3
- x=21.67
This is an Arithmetic Progression with 1st term 11 and common difference d=6
Number of Rows Number of seats Common difference " d"
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1st a₁ = 11
2nd a₁+d =17 d =2nd - 1st = 6
3rd a₁ +2d = 23 d =3rd - 2nd = 6
4th a₁ +3d = 29 d= 4th - 3rd = 6
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nth ROW a(n) = a₁ + (n-1)d
18th ROW a₁₈ = 11 + (18-1).6 = 11+(17)(6) = 113
General equation to predict the number of seat an the nth row:
Number of seats in nth row = a₁ + (n-1).d
6(2 + 5t) = 6*2 + 6*5t = 12 + 30t
Answer is 12 +30t.
