I uploaded the answer to a file hosting. Here's link:

Answer with Step-by-step explanation:
a.

Taking both sides log

Using identity:

Using identity:


b.
We know that

Using identity

c.

Substitute the values then we get

By using 
Hence, 
7+5a+6b is the answer because 16-9 is 7 and 8-3 is 5.
Answer:
17 loaves of bread/hour
Step-by-step explanation:
136/8= 17
3/4. 4/8= 2/4. so 1/4+2/4=3/4