Simplify the expression.
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?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: A
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You put a drink in the freezer to cool. When it is chilled, you take the drink out but, being forgetful, leave it sitting on the kitchen counter. The temperature D, in degrees, of the drink t minutes after it is put in the freezer is given by
?
.
?
During the period from 5 minutes after it is put in the freezer until 20 minutes after, when is the drink the warmest, and what is its warmest temperature? Be careful. You are asked for the warmest temperature, not the coldest. Round your answers to two decimal places.
?
A. It reaches its warmest temperature of 45.13 degrees after 5.00 minutes. B. It reaches its warmest temperature of 5.00 degrees after 45.13 minutes. C. It reaches its warmest temperature of 20.00 degrees after 54.93 minutes. D. It reaches its warmest temperature of 54.93 degrees after 20.00 minutes.
Provide an appropriate response.Evaluate the expression: 
A. 
B. - 
C. - 
D. 
Use the quadratic function to determine if the function has a maximum or minimum value and then find this maximum or minimum value.f(x) = -x2 - 4x - 7
A. maximum at (- 2, - 3) B. maximum at (3, 2) C. minimum at (0, 2) D. minimum at (3, 0)
Solve.x2 + y2 = 815x2 + 2y2 = 196
A. 
, 
B. 
, 
, 
, 
C. 
, 
, 
, 
D. 
, 