Find the measure of the exterior 21. 60°
7
30°
A. 80°
O B. 150°
C. 90°
O D. 60°

Fill in the missing exponents in each box and show how you found the answer. (4 points: 2 points for each correct answer with work shown) c. (9^4)^? =9^1 d.(5^? )^3=5^1 *question marks represent the boxes