Since is arithmetic, it's given recursively by
where is a fixed number and is the starting term in the sequence. We have
and so on, so that
We're told that , so
and
so that
Then the first term in the sequence is :
and the sequence has general formula
The first negative term occurs for
The first negative term in the sequence is .
if 540 is 90% or 0.9 then 0.1 or 10% is 1/9 of 540.
540/9 is 1/9 of 540, and 10% of the school's population. that makes 60
so 540 + 60 = 100% of the school assembly.
600 students
what happened is Haley didn't get enough syrup in her pancakes.
2x + -7 +8 = -x+16
2x + 1 = -x +16
2x +1 -1= -x +16 -1
2x+x = -x +x + 15
3x = 15
3x/3 = 15/3
x= 5
2(5) + -7 +8 = -5+16
10 +-7+8 = 11
11=11