Answer:
D. 0.89
Step-by-step explanation:
Use the change of base rule:
[tex] \log_b a = \dfrac{\log_x a}{\log_x b} [/tex]
[tex] \log_9 7 = [/tex]
[tex] = \dfrac{\log_{10} 7}{\log_{10} 9} [/tex]
[tex] = \dfrac{0.8451}{0.9542} [/tex]
[tex] = 0.8856 [/tex]
Answer: D. 0.89
