C) Express the vector BC in terms of a and b. (look at the attachment)

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5

529 and 531

step-by-step explanation:

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

5x+10 is the correct one

hope this