You can put this solution on YOUR website! If you have $160 to spend and you spend $8 a day what is the slope intercept equation?
y = -8t + 160, where t is the no. of days & y is remaining amt
;
x | y
------
0|160
1|152
5|120, for example 160 - (5*8)
10| 80
20| 0
: