It is B.standard of living
(3x-5)(2x+7) =
= 3x·2x + 3x·7 - 5·2x - 5·7
= 6x² + 21x - 10x - 35
= 6x² + 11x - 35
No they should multiplied before adding
So c is located at -50 from 0, and d is 50 from 0. we could just say that c+d=?
0 is 50 away from c, so c=50, d is 50 away from 0 so d=50, now we just add 50+50=100, answer is 100
:)
