How many grams of uranium-235 will remain after 1 million years if you start with 200 grams? (Answer needed ASAP)

Write an equation of a line in slope intercept form that is perpendicular to the line 2x -3y = 12 and passes through the point (2, 6).

How many solutions does the nonlinear system of equations graphed below have?

An arithmetic series a consists of consecutive integers that are multiples of 4 what is the sum of the first 9 terms of this sequence if the first term is 0