Perform the subtraction and simplify.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: A
Mathematics
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The formula for an exponential function is 
, where t is measured in months. Then the monthly percentage decay rate for y is
??
A. 0.94% B. 6.01% C. 0.06% D. 6%
Mathematics
Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves about the given lines.
,
y = 4,
x = 2; revolve about the line 
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Write each expression using the LCD as the denominator.
, 
, 
A. 
, 
, 
B. 
, 
, 
C. 
, 
, 
D. 
, 
, 
Mathematics
Solve. When necessary, round answers to two decimal places.At one point during their hiking trip, Rhonda and Larry estimated that a clearing was 39 yards away. How many feet was that?
A. 468 feet B. 13 feet C. 9.75 feet D. 117 feet
Mathematics