There's no options but a coupon is a way of getting discounts on items that you buy. Unlike gift cards they are not free money but you do pay less for some tings, usually with purchase of more or another item.
We need to calculate a total TIME.
Let the time required to cover distance d at 20 mph be x. d is the ONE WAY distance, not the total distance traveled (which would be 2d).
Remember the formula d=rt: the distance traveled equals the rate times the time. Here, d = rx, and thus x = d/r = d/(20mph)
Let's begin by recognizing that d(going) = d(returning)
Then (20 mph)x = 6 + (16 mph)x
(20 mph)x - (16 mph)x = 6 miles
Then: (4 mph)x = 6 miles
or: x = 1.5 hours
It takes the bird 1.5 hours at 20 mph to cover distance d, which is 30 miles.
Thus, the total time spent flying is 1.5 hours (going) and [1.5 hours + (6 miles)/(16 mph) returning:
1.5 hours + 1.5 hours + 0.375 hours = 3.375 hours total.
The total distance covered is 2d, or 2(30 miles) = 60 miles.
It took me a while and a lot of experimentation to arrive at these results. Please, if my arguments here are not clear, ask questions.
Take out the GCF of -4d, which creates
-4d(d^2+7d-1)
Doesn't seem right... tell me if I messed up anybody... if not, there's your answer.
a.) w = 0
Old factory: 
Plug in 0
When a number has an exponent of 0, the number becomes 1
p(0) = 238(1)
p(0) = 238
New factory: w = 0, p(0) or y = 190 (0,190)
238 - 190 = 48
During Week 0, 48 more specialty items were produced at the old factory than at the new factory.
Sorry I don't know how to do b or c
