Question

What does this mean
2c - 4 if c =8

Answer 1

Hi Jessica 2c - 4 (but if c equal 8). The first thing to do is replace c by 8 . So 2(8) -4 . now it is 16-4 = 12

Answer 2

c is the unknown number
you can replace c to 8
(PEMDAS)

2×8-4
16-4=
12