3(8)-12=12
24-12=12
The fourth choice.
Yeah I think you already got it
3. We can see that
1+100=101
2+99=101
3+98=101
.................
and so on
From 1 to 100, there are 50 pairs that has the sum is 101
Z=101×50=5050
4. We can see that
1-2=-1
3-4=-1
5-6=-1
...........
and so on
There are 10 pairs that has sum is -1
Z= 10×(-1)=-10
The relationship between time and amount of popcorn popped is proportional.
In the equation f(n) = 2n - 7
f(11) = 15