Answer:
lol
Step-by-step explanation:
6/5 because flip the second number and multiply when dividing fractions.
Answer:
do you know how to divide without a calculator? you should really learn...but here 3=211,4=60.875,5=410.25,6=307.23
240 days is 4 times the half-life, which means that a sample of 1000 mg will decay to

after 240 days.
X/3 > 7 <== ur equation
multiply both sides by 3
x > 7 * 3
x > 21 <== ur solution