Malik's solution to the equation x 4y=10, when x=60, is shown below. x - 4y = 10
-x - 4(60) = 10
-x-240 =10
2x-240 +240 =10+240
5
lis) - [250]
25
x = 265
What error did Malik make first when solving the equation x-4y=10?
O Malik did not multiply (250) correctly.
O Malik added 240 to each side of the equation.
O Malik did not multiply correctly.

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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.

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