List the key features of the quadratic function y = –x2 + 4x – 3. A)

x-intercepts: (1,0) and (3,0), y-intercept: (0,–3), vertex: (–1,2)

B)

x-intercepts: (1,0) and (3,0), y-intercept: (0,–3), vertex: (2,1)

C)

x-intercepts: (–1,0) and (–3,0), y-intercept: (0,–3), vertex: (2,–1)

D)

x-intercepts: (1,0) and (3,0), y-intercept: (0,3), vertex: (2,–1)

the answer is 21%.

step-by-step explanation: 2

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.