HOPEFULLY THIS IS NOT BLURRY PLZ HELP ME

Answer:
a. 4 b.15 c. 26. d.30
Step-by-step explanation:
i had this problem and i have the paper and i got it right so if they are wrong then i have no clue
Answer:a. 4 b.15 c. 26. d.30
Step-by-step explanation:
Hope it helps