Someone give me answers & an explanation!

all work is pictured and shown

a = -18

b = 7

c = 27

Step-by-step explanation:

given f(x) = 5x - 8

Simply go down the table and substitute each value of x into the function and report the final

when x = -4,

f(-4) = 5(-4) - 8 = -28

when x = -2

f(-2) = 5(-2) - 8 = -18 (Answer a)

when x = 3

f(3) = 5(3) - 8 = 7  (Answer b)

when x = 7

f(7) = 5(7) - 8 = 27  (Answer c)

28/4 = 21/N

7 = 21/N

N = 21/7

N = 3

Hope this helps!