The answer to this, maybe.., is 180
12 is 20% of 60 because 12/60 = 0.2.
2800 x 0.07 = 196
2800 + 196 = 2996
Total paid = $2996
Your answer is 3.7!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
a is the answer as the only change is the gradient being halved,
b would be if it was -1/2 and c would be1/2 x+1/2
