1.You buy a new computer for $1,500. The value y (in dollars) of the computer decreases by 40%
each year.
2. Write an exponential function for the value, y, after x years.
3. How much will the computer be worth after 5 years of ownership?

4.A house was bought 20 years ago for $450,000. Due to inflation, its value has increased about 2%
each year.
5. Write an exponential function for the value, y, after x years.
6. How much will the house be worth after 10 years of ownership?

Brittany has designed four different birdcages, each with the same volume: a square pyramid, a cylinder, a cone, and a sphere. the zoo wants to use one of brittany’s designs but plans to change the volume of the cage. find the design change that would result in the birdcage with the greatest volume. a.) increase the area of the base of the square pyramid by a factor of ten. b.) increase the height of the cylinder by a factor of ten. c.) increase the radius of the cone by a factor of ten. d.) increase the radius of a sphere by a factor of ten.