Please explain: visually if possible:

Under a state's unemployment insurance policy, the benefits paid to eligible unemployed workers are determined by the formula B = 25 + 0.5W , where B is the level of benefits and Wis the former weekly wage. However, all unemployed workers are guaranteed a minimum benefit of $100/week regardless of previous earnings and no worker may collect more than $250/week. Calculate the level of benefits and replacement rates for individuals earning $100/week, $250/week and $500/week prior to being laid off.