4. bob’s piece of paper weighs 1,500 grams. sue’s paper weighs 2,400 grams. how much heavier is sue’s piece than bob’s paper, in kilograms?

0.9 Kilograms

Step-by-step explanation:1500 grams converts to 1.5 kilograms and 2400 grams converts to 2.4 kilograms. 2.4-1.5=0.9 kilograms

okay wait before i answer, is this for your points on a graph?

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)