for the first term:
n= 1 there is 1 item
n=2 there are 2+1 = 3 items
n = 3 there are 3+2+1 = 3+2 = 6 items
n = 4 there are 4+3+2+1 = 4+6 = 10 items
We are adding the "n" term each time
n = 5 10+5 = 15
n= 6 15+6 = 21
n = 7 21+7 = 28
n = 8 28+8 = 36
There would be 36 items in the 8th step
The perimeter of rectangle is 2L + 2W where L is length and W is width.
Then substitute and evaluate:
2(2x + 7) + 2(3x + 8y)
4x + 14 + 6x + 16y
10x + 16y + 14
Answer: 12
Step-by-step explanation:
Y = points
so substitute 72 for y
72 = 8x
divide by 8
9 = x
stephanie reads nine books to reach 72 points
