- 4x + 25 = 13
4x = 12
x = 3
0+12, 11+1, 4x3, 6x2, etc.
6!+7!+8!=(n)(6!)
calculate the individual values first:
6!=720
7!=5040
8!=40320
plug them into the equation:
720+5040+40320=n720
solve for n
5760+40320=n720
46080=n720
divide both sides by 720 to isolate n
46080/720=n720/720
64=n
Answer:
She read her textbook at a speed of 3 chapters per hour.
Simplest Form: log2 (x/9)