What point on the surface z is closest to the origin?
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Hint : Minimize the square of the distance from 
to the origin.
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NOTE: Please enter your answer(s) in the form . If there is more than one answer, separate them with commas.
What will be an ideal response?
,
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Evaluate the algebraic expression for the given values of the variables.m ? n - 9, for m = 7, n = 8
A. 504 B. 47 C. 65 D. 7
The amount remaining A, in grams, of a radioactive substance is a function of time t measured in years. The equation of change for A is
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A: What can you conclude about the function 
?B: If there are initially 48 grams of the substance present, find a formula that gives A in terms of t. Write your answer using the alternative form for an exponential function.C: How long will it take before only 
of the original amount is left?
What will be an ideal response?
Evaluate the improper integral.
A. 
B. 
C. 
D. 
Solve the problem.An object is thrown upward from the top of a 
building with an initial velocity of 48 feet per second. Solve the equation 
to find the time t (in seconds) at which the object hits the ground.
A. 160 sec B. 2 sec C. 5 sec D. -2 sec