Forty grams of iodine 131, a radioactive material, decays according to the equation a(t)=40e^(-0.087t) (t is in days and a is the amount present at time t) a. how much iodine 131 is remaining after 5 days? b. when will 10 grams of iodine 131 be left?

1c) the number 131 is a term in the sequence defined by the explicit rule f(n)=5n-4. which term in the sequence is 131? 2a) write the first four terms of the function f(n)=n^2-1 2b) what is the 10th term of the sequence defined by the explicit rule f(n)=n^2-1 2c) the number 224 is a term in the sequence defined by the explicit rule f(n)=n^2-1. which term in the sequence is 224?

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

Answer 20 points and brainiest ! on the board, your teacher writes an example of how to find the median. one of the numbers is erased, leaving what is shown, 18, 30, 26,12 22. what is the median? a. 10 b. 20 c. 24 d. 28