The decay of 923 mg of an isotope is given by where t is time in years. How
many years have elapsed when there are 200 mg
remaining?
A(t) = 923e-0.0271

In each bouquet of flowers, there are 2 roses and 3 white carnations. complete the table to find how many roses and carnations there are in 2 bouquets of flowers.

The circumference of a circle is 5 pi cm. what is the area of the circle?

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer