(1.) An apple pie is removed from a 350 degree oven. The temperature of the pie t minutes after being reemoved is given by the function:
T(t) = 72+268e -0.086t. Determine the time(in minutes) required for the pie to cool to a temperature of 115 degrees Fahrenheit. Answer accurate to two decimal points..

(2.) A ball is tossed upwards from a height of 200 feet with an initial velocity of 45 feet/second. The heoght h(t) of the ball above the ground t seconds after being tossed is given by the function:
h(t) = -16t^2+45t+200. Determine the time in seconds after being tossed that the ball reaches a height of 100 feet above the ground. Answer as a number accurate to two decimal places.

(3.) Graph the function f(x) = x^3 -6x+2 on the interval from x= -4 to x =4. The graph of this function has three x-intercepts. Calculate the largest(rightmost) of these x-intercepts to two decimal places.

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(1.) An apple pie is removed from a 350 degree oven. The temperature of the pie t minutes after being removed is given by the function: . Determine the time (in minutes) required for the pie to cool to a temperature of 115 degrees Fahrenheit. Answer accurate to two decimal points.
For the temperature to be 115 degrees Fahrenheit, we should have
This implies
This implies ...

Solution Summary

The expert calculates the largest (rightmost) of these x-intercepts to two decimal places in these problems.

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