Solve the following equation for the given variable. 3(x+6)=-9

Hello there,

So we are solving this equation for x and the equation is as follows:

First we are going to distribute the 3 inside the parentheses:

Now we subtract 18 from both sides:

Lastly we are going to divide both sides by 3:

So the answer to given equation would have to be x = -9.

Hope I helped,

Amna

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.