Area = length * width
length = (2 * width) - 1

Since length cannot be negative, w = -2 is not a solution. Thus,

is your width.
Since length = 2 * width - 1, plug in width:
Discount is $2 sale price $38
Use the point-slope formula
y-y1=m(x-x1)
y-1=-3(x-1)
y-1=-3x+3
y=-3x+4
The given data are:
70% of single-vehicle traffic fatalities that occur at night on weekends involve an intoxicated driver. If a random sample of 15 single-vehicle traffic fatalities that occur at night on a weekend is selected, the probability that 11 involve a driver who is intoxicated is:
(11/15) * 0.70 = 0.513