Element X is a radioactive isotope such that every 25 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 90 grams, how long
would it be until the mass of the sample reached 55 grams, to the nearest tenth of a
year?

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second