Answer:
Val will need 6b+8 seeds
Explanation:
Let's say, Val will plant 2 seeds in one garden, and 4 seeds in another garden. How many seeds does Val need?
Well, the answer to that is simple- it's just 2+4, which is 6.
For this question, we use a similar method. Just add 5b+8 to b.
b+5b+8 = 6b+8
Let me know if this helps!