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Yesterday, 21:26

Zahra compares two wireless data plans Which equation gives the correct value of n

the number of GB for which Plans A and B cost the same

(G8 means 'gigabytes of data)

Wireless Plan A

No initiate fee and 8$ for each GB

Wireless Plan B

$20 for the

first 2 GB

$6 for each

additional GB

after the first 2

A) 8n = 20 + 60

B) 8n = 20 (2n) + 6

C) 8n = 20 + 6 (n-2)

D) 8n = 20 + 2n+6

+4
Answers (1)
  1. Yesterday, 23:59
    0
    8n=20+6 (n-2)

    Step-by-step explanation:

    n is the number of GB

    Plan A has no initial fee and charges 8$ per each GB

    So A has an equation that is y=0+8n or just y=8n.

    Plan B has 20 for the first 2 GB and $6 for each addition GB after the first 2.

    So B has an equation that is y=0+20+6 (n-2) assuming n is 2 are greater.

    So the two equations are y=8n and y=20+6 (n-2).

    We want Plan A to be the same as Plan B.

    So we need to solve:

    8n=20+6 (n-2).

    Let's check our equation:

    Distribute:

    8n=20+6n-12

    Subtract 6n on both sides:

    2n=20-12

    2n=8

    Divide both sides by 2:

    n=4

    Plan A charges 8 dollars ber GB, so plan A charges 4 (8) = 32 dollars.

    Plan B charges 20 dollars for the first 2GB and 6 dollars for each GB after so we used 4 which means we are spending 20+6 (2) = 20+12=32 dollars.

    They are the amount so n=4 is right.
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