Why does juliet call romeo selfish just before she stabs herself?

Because Romeo drank all the poison without leaving any of it for her to kill her self in the same way.

Explanation:

In the fifth act, scene 3, as Juliet wakes up and realizes that Romeo is dead, she says:  

'What’s here? A cup, closed in my true love’s hand? Poison, I see, hath been his timeless end. O churl, drunk all, and left no friendly drop

To help me after?'

She calls him selfish because there´s no poison left, and she wants to die in the same way as him. Finally, she takes his dagger and stabs herself.

in the problem you wrote said that the taxi charges $0.070 per mile(which would be 7 cents per mile), but then in your suggested equation you have it as $0.70 per mile (which is 70 cents per mile).

the latter seems more realistic, so i will assume that the taxi costs $5.00 and charges $0.70 per mile with tolls costing an additional $3.50. and it asks you to find how far you can travel on $36.50.

let x the number of miles traveled. since the taxi charges $0.70 per mile, multiplying this by the miles traveled (x) will yield the cost of the taxi ride as far as how far it took you. then adding this amount to the cost of the taxi ($5.00) and the additional cost for the tolls ($3.50) will give you the total cost of the taxi ride ($36.50)

that is,

            (0.70)x + 5.00 + 3.50 = 36.50

adding the like terms on the left-hand side of this equation, we arrive at the following:

            (0.70)x + 8.50 = 36.50

subtracting 8.50 from both sides of the equation, we get:

            (0.70)x = 28.00

to solve for x, divide both sides of the equation above by the coefficient of x (that being, 0.70):

            x = 40

thus, you can travel up to 40 miles on $36.50