A radioactive isotope decays at the rate indicated by the exponential
1500
function A(t) = 800
where t is the time in years and
the amount of the isotope, in grams, remaining.
What will the mass of the isotope be after 4500 years?

Timed*** there are 8 rows and 8 columns, or 64 squares on a chessboard. suppose you place 1 penny on row 1 column a, 2 pennies on row 1 column b, 4 pennies on row 1 column c, and so on … how many pennies are on each square? a =   b =   c = d =   e =   f = g =   h =

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form