Does anyone know how to find the unit vector of: v: < -6, -8> ?

it's either,
a.) < 3/5, 4/5 >
b. < -3/5, -4/5 >
c.) < 4/5, 3/5 >
d.) < -4/5, -3/5 >
.

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

If i had 1234 apples and 1 banana what is the total amount

How do i take any fraction and make it into a decimal or percentage?