Three items were bought at a car boot sale. Item A Mass = 42 grams Volume = 2 cm Item B Mass = 87.5 grams Volume 5 cm3 Item C Mass = 147 grams Volume = 7 cm3 = The density of platinum is approximately 21 grams per cmº. Which of the items cannot be platinum? You must show your working.

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

a) 0,0; 1,1; and 2,2

step-by-step explanation:

these have the exact same coordinates, thus they are the correct function.

its c