Pls help me with these thx

Write a numeric expression for EACH phrase on the line provided:

What is the solution of log2  (3x  -  7)  =  3? 4 5

How do you find the circumfrance of a circle?

Abakery recorded the number of muffins and bagels it sold for a seven day period. for the data presented, what does the value of 51 summarize? a) mean of bagels b) mean of muffins c) range of bagels d) range of muffins sample # 1 2 3 4 5 6 7 muffins 61 20 32 58 62 61 56 bagels 34 45 43 42 46 72 75