Answer: 3
Explanation: logarithm base 8 of 512 is 3
Mrs. Smith donated $20
The constant proportionality is $1 because no matter what, Mrs. smith will donate $1 for each mile. So if Sam were to only walk 1 mile, mrs. smith would donate $1. Or seen as a 1:1 proportion.
You can't add the same number to 2 different numbers and get the same answer, so no.
Answer:

r = ∛4050
Step-by-step explanation:




