A new deck will be 12 feet long by 14 feet 8 inches wide. The width of each board plus the spacing between boards is 4 inches.
How many 12-foot boards will it take to build a deck that is 14
feet 8 inches wide?

answer: procent 54 wynosi 33,33%

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.