Answer:
The answer is B) 5a + b
Step-by-step explanation:
9a - 4a is 5a
3b - 2b is 1b or just b therefore the answer is
5a + b
Answer:
60 pages
Step-by-step explanation:
Day 1 : 1/3 book
Day 2: 1/4 book
Day 3: 1/5 book
Day 4: 13 pages
Total days 1 through 3 = 1/3 + 1/4 + 1/5 = 20/60 + 15/60 + 12/60 = 47/60
Day 4 = 1 - 47/60 = 13/60
The first is proportional the second is proportional and the third is not proportional