Answer:
for 3c it's After Edgar's 9th quiz he would have a grade of 89%
Step-by-step explanation:
It is going up by 4 everytime so...
57,61,65,69,73,77,81,85,89
1. 2. 3. 4. 5. 6. 7. 8. 9.
(Sorry but it's hard to read)
so it would be 10/-5 which would be -2
25.9
pi-pi+pi/pi is 0+(1*25.9) which is 25.9
Hope this helps :D