Answer:
The greatest prime factor of 38 is 19
the answer is A
700 x 5 = 3500
30 x 5 = 150
7 x 5 = 35
3500 + 150 +35 = 3685
700 x 200 = 140,000
30 x 200 = 6000
7 x 200 = 1400
140000 + 6000 + 1400 = 147400
BC= 30
Reason: 64-8
56/7
8=x
3x=24
24+6
30
(5x-1) - (7x5) + (5x2)
= -5 - 35 + 10
= -5 - 45
= -50