A. = logb (3/7)^1/2
= logb 3^1/2 - logb 7^1/2
= 1/2(logb 3 - logb 7)
b. = log 7x^3 + log y^5
= log 7 + log x^3 + log y^5
= log 7 + 3 log x + 5 log y
3*10⁻⁵ + 0.0000022
= 0.00003 + 0.0000022 = 0.0000322
= <span>0.0000322 = 3.22 * 10</span>⁻⁵
Answer:

Step-by-step explanation:


