Andrew got hired at grub burger and earns $8.25 an hour. Which choice is correct for filling the amount of $ going down? Each line separated by a comma.

The given table is

Hours.    Earnings per hour.

  0

  4

  8

 12

Now, the unit rate is $8.25 per hour, according to the proble, this is the constant ratio of change, that means, we only need to multiply the number of hours with the unit rate.

Hours.    Earnings per hour.

  0                     0

  4                      33

  8                     66

 12                      99

Correct First answer - aₙ = 12 + (-6)(n - 1)

Step-by-step explanation:

Given: arithmetic sequence 12, 6 , 0 , -6,

First term       a₁ = 12

Second term a₂ = 6

Third term     a₃ = 0

we will get the difference

d = a₂ - a₁ = a₃ - a₂ = 6 - 12 = 0 - 6 = - 6

d = - 6

a₂ = a₁ + d

a₃ = a₂ + d = a₁ + 2 d

a₄ = a₃ + d = a₁ + 3 d

aₙ = a₁ + (n -1) d

aₙ = 12 + (n -1) (-6) = 12 + (-6) (n -1)

aₙ = 12 + (-6) (n -1)

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