Question

Which expression has a value of 15 when n=7

A-43-5n
B-3n-5
C-6n-28
D19-28/n

Answer 1

If you calculate them all, you will see that answer is D;
19 - 28/7 = 19 - 4 = 15

Answer 2

a-43-5x7=8
b-3x7-5=16
c-6x7-28=14
d-19-28/7=15
the awnser is D