Select all the correct answers.
Which expressions represent a quadratic expression in factored form?
x2 - x - 72
(x + 3)(x - 7)
-8(x + 56)
(x + 1)(x - 2)
(x - 2) + (x + 3)

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.

what is the missing angle?