Element x is a radioactive isotope such that every 69 years, its mass decreases by half. given that the initial mass of a sample of element x is 4500 grams, how much of the element would remain after 7 years, to the nearest whole number?

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters

How do u write a function for the reflection across the y axis

5cakes cost 3.50 how much do 7 cakes cost