How to find the answer for the equations
31-16=5(x-3)

For what values of b will f(x)= logbx be a decreasing function? (16 )

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)