The following function takes t, minutes since a bar of metal was removed from a furnace, and gives A, the temperature of the bar (in degrees Fahrenheit). A(t) = 75 + 625e to the -0.046t power 1. Determine the temperature of the metal bar as it was pulled out of the furnace (in other words, when t = 0). 2. Determine when the temperature of the bar drops below 600 degrees Fahrenheit (This determines how long it can be easily shaped).
The following function takes t, minutes since a bar of metal was removed from a furnace, and gives A, the temperature of the bar (in degrees Fahrenheit).
A(t) = 75 + 625e to the -0.046t power
1. Determine the temperature of the metal bar as it was pulled out of the furnace (in other words, when t = 0).
2. Determine when the temperature of the bar drops below 600 degrees Fahrenheit (This determines how long it can be easily shaped).
The following function takes t, number of seconds since a ball was tossed in the air, and gives H, the distance from the ball to the ground (in feet).
H(t) = - 16t^2 + 90t +5
3. Determine the distance from the ball to the ground 1 second after it was tossed.
4. Determine how long it takes for the ball to hit the ground (in other words, determine when the distance drops to 0 feet)
The following function takes t, the number of years since a number of elk were released into a nature preserve, and gives E, the number of elk.
E(t) = 300/1+9e^-0.035t
5. Determine how many years it takes for the number of elk to reach 270 (which is 90% of the maximum number of elk the preserve can maintain).
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