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12

Step-by-step explanation:

Let the unknown number be x.

8 = -4(1) + x

8 = -4 + x

x - 4 = 8

x = 8 + 4

x = 12

= - 4n + 12

Step-by-step explanation:

The n th term of an arithmetic sequence is

= a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 8 and d = a₂ - a₁ = 4 - 8 = - 4 , then

= 8 - 4(n - 1) = 8 - 4n + 4 = - 4n + 12

7

step-by-step explanation:

10 glasses of juice could be made with 5 carrots, 1,500 orange juice, 2,000 papaya juice.