Indicate which property is illustrated in Step 5. Step 1 5x + 5 + 9x + 11 = (5x + 5) + (9x + 11)
Step 2 = 5x + (5 + 9x) + 11
Step 3 = 5x + (9x + 5) + 11
Step 4 = (5x + 9x) + (5 + 11)
Step 5 = (5 + 9)x + (5 + 11)
Step 6 = 14x + 16

A.
commutative
B.
arithmetic fact
C.
associative
D.
distributive

D)

Step-by-step explanation:

x = 23.78

step-by-step explanation:

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.