5 = 29
6 = 34
7 = 39
8 = 44
9 = 49
10 = 54
11 = 59
12 = 64
13 = 69
14 = 74
15 = 79
No. Leila will not have climed 86 flights by the end of 15 weeks
The thickness of the board was decreased from 3 / 4 inches to 9 / 16 inches.
Therefore,

So the board's thickness in inches decreased by
A 3rd degree polynomial of any sort times a 4th degree polynomial of any sort will result in a 7th degree polynomial.
