The function of f(x)=-x+4x-3 is 3x-3. I hope this helps. :)
Answer: 56
Step-by-step explanation: 100 multiplied by 50% is 50 + 12% =56
$180 for 6 months
Why: Well the equation is " y = 25x + 30 " where x represents the months. First you do 25 x 6 because the equation says $25 PER MONTH. After that, add the initial fee of $30 giving you the total of $180.