Answer:
5
Step-by-step explanation:

I know you can create an equation to solve this but its been a while since ive done this so im going to slowly write it out.
Day-1=12
2=18
3=24
4=30
5=36
6=42
7=48
8=54
9=60*
n=9
D) The measures of the non- right angles in each triangle .
The first equation is

The second equation is

If you sum the two equations you'll cancel y:

And since the sum must be 11, we have y=9.
Answer:
4
Step-by-step explanation: