m = money earned in one week
h = hours worked
x = times credit card was swiped
m = 14.45h + 8.50x
The range would be the difference between the lowest age and the highest age.
The highest age is 76, the lowest age is 30
The range is 76 - 30 = 46
(x4−3x3+4x2−8)/(x+1) = x3−4x2<span>+8x−8.</span>
