The correct equation that shows the relationship between the number of brownies sold (b) and the total sales from brownies (s) is:
\( s = 1.5b \)
To find the total sales from brownies if the club sells 25 brownies, we can substitute \( b = 25 \) into the equation:
\( s = 1.5(25) = 37.50 \)
So, if the club sells 25 brownies, the total sales from brownies would be $37.50.
Thus, the correct response is:
s = 1.5b; $37.50