Answer:
It is 5/5 or 1/1 as it goes up 5 and to the left 5!!!
Step-by-step explanation:
12. n^2+2n
if you insert 1 for k and then work up by inserting 2 for k and adding those together and stoping at n.
13. 8-2(2^n)
if you insert 3 for k and then work up by inserting 4 for k and adding those together and keep on going but stopping at n.
Hope that helps :)
sin(8x) cos(3x) - cos(8x) sin(3x)
sin(8x - 3x) = sin(5x)