Please help - Factor to create an equivalent expression using the GCF: 20x - 10?

10(2x-1)

Step-by-step explanation:

Since the GCF (greatest common factor) of 20 and 10 is 10 We factor out the 10.

=> 10(2x-1)

i found two solutions,   n = 2 • ± √3 = ± 3.4641

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.