Vector v has its initial point at (7, -9) and its terminal point at (-17, 4). Which unit vector is in the same direction as v?
a. u=(-24/sqrt745 , -13/sqrt745)
b. u=(-24/sqrt725 , 13/sqrt725)
c. u=(-24/sqrt745 , 13/sqrt745)
d. u=(24/sqrt725 , -13/sqrt725)

the answer to the question is a  

it has the same slope and the same y-intercept.

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !