The mass of a radioactive substance follows a continuous exponential decay model, with a decay rate parameter of 10% per day. A sample of this radioactive substance has an initial mass of 3.27kg. Find the mass of the sample after five days. Round your answer to two decimal places. Note: This is a continuous exponential decay model.
And though the decay rate parameter is 10% per day, the actual decay is not 10% each day.

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

i hope this is what you were looking for.

see attached graph

step-by-step explanation:

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870