Which of the following expressions reperesents the distance between -13 and -4 on a number line?

Step-by-step explanation:

You've shared only possible answers a and c.  What about b and d?

Answer a) is correct.  The second - sign represents the difference between -13 and -4 (which is 7, by the way).  -13 - (-4) works out to -13 + 4 = -9, and the absolute value of that is |-9|, or 9, the distance between -13 and -4.

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.

ƒ = 0.03b

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step-by-step explanation: