Solve the problem.Alla doesn't trust banks, so her savings are hidden under her mattress. Betsy has her savings in an investment at simple interest. In approximately what year did they have the same amount?
A. 1996
B. 1986
C. 1988
D. 1989
Answer: D
Mathematics
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At what points is the given function continuous?f(x, y) = tan (x + y)
A. All (x, y) ? (0, 0)
B. All (x, y) ? 
C. All (x, y)
D. All (x, y) such that x + y ? 
, where n is an integer
Mathematics
Solve for the variable.x - 
= 
A. 1
B. 
C. 
D. 
Mathematics
Solve the problem.The side of an equilateral triangle is 
shorter than the side of a square. The perimeter of the square is 
more than the perimeter of the triangle. Find the length of a side of the square.
A. 25 inches B. 22 inches C. 26 inches D. 27 inches
Mathematics
Find the first three nonzero terms of the Taylor expansion for the given function and value of a.cos x 
A. 1 - 
- 
2 + ...
B. 
- 
3 + 
5 - ...
C. 
- 
2 + 
3 - ...
D. 1 - 
2 + 
3 - ...
Mathematics