Solve.Alexander and Judy are 32 miles apart on a calm lake paddling toward each other. Alexander paddles at 5 miles per hour, while Judy paddles at 8 miles per hour. How long will it take them to meet?
A. 1
hr
B. 19 hr
C. 2
hr
D. 10
hr
Answer: C
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Provide an appropriate response.If the series 
is integrated twice term by term, for what value(s) of x does the new series converge?
A. 0 ? x < 2 B. 0 ? x ? 2 C. 0 < x < 2 D. 0 < x ? 2
Find all the second order partial derivatives of the given function.f(x, y) = ln (x2y - x)
A. 
= 
; 
= 
; 
= 
= 
B. 
= 
; 
= - 
; 
= 
= - 
C. 
= 
; 
= - 
; 
= 
= - 
D. 
= 
; 
= - 
; 
= 
= - 
Write the number as indicated.The world-wide production of cereal grains has reached about one billion, nine hundred 
million, four hundred eight thousand, six hundred tons. Write the number using digits.
A. 1,968,408,600 B. 1,968,480,600 C. 1,968,408,060 D. 1,968,848,600
Solve the problem. Give the answer to the nearest tenth.The position of an object moving in a straight line is given by s = 2t2 - 3t, where s is in meters and t is the time in seconds the object has been in motion. How long (to the nearest tenth) will it take the object to move 19 meters?
A. 3.7 sec B. 20.0 sec C. 66.5 sec D. 3.9 sec