Radioactive phosphorus decays continuously at the rate of 6% per day. This means that an initial amount of 8 grams of radioactive phosphorus decays after t days according to the formula:
A (t) = 8e^-0.06*t
How much of the sample is left after 15 days?

When is the remaining amount half of the initial amount?
Answer should be in days

No bs answers.

Translate this phrase into an algebraic expression. 21 more than twice goran's savings use the variable g to represent goran's savings. need to know fast.

If there are 3.281 feet in 1 meter, how many inches are in one centimeter

Scenario: susan wants to make 2 square flags to sell at a crafts fair. the fabric she wants to buy is 3 meters wide. she doesn't want any fabric left over. what's the least amount of fabric she should buy? question: which equation will susan solve her problem? note: let x represent the length of 1 side of the flag. options: 1) 2x^2 = 4x 2) 8 +2x = 2(4x) 3) 2 * 2 = 4 * 2 4) 4x^2 -2x = 0