I don't know but I think it is B) The slope is negative, and a linear model is a good fit for the data.
Answer:
$18
Step-by-step explanation:
18% of 100 is 18
-2log_5 7x = log_5 2
log_5[1/(7x)^2] = log_5 2
log_5(1/49x^2) = log_5 2
log_5(1 - 49x^2) = log_5 2
1 - 49x^2 = 2
You finish.