Solve the problem. Express the answer as a mixed number when appropriate.Annie must send two packages. One of the packages weighs 15
lb and the other weighs 7
lb. What is the total weight of the two packages?
A. 22
lb
B. 21
lb
C. 15
lb
D. 23
lb
Answer: A
Mathematics
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Determine any local or absolute extrema as indicated.Use the graph of f to estimate the local extrema.
A. No local maximum; local minimum: approx. -7.67 B. Local maximum: 1; local minima: -2 and 3 C. Local maximum: approx. 8.08; local minima: approx. -7.67 and 2.75 D. Local maximum: ?; local minima: -2 and 3
Mathematics
Find an equation for the ellipse described.Focus at (0, -6); vertices at (0, -7) and (0, 7)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Solve the problem.The price of a printer was reduced from $400 to $240. What was the percent of decrease?
A. 66.7% decrease B. 45% decrease C. 40% decrease D. 60% decrease
Mathematics
Solve the equation.3x = 81
A. 27 B. 4 C. 5 D. 3
Mathematics