Solve.The value of a stock rose by 
of a dollar and then dropped by 
of a dollar. What was the overall change in value?
A. 
B. - 
C. - 
D. - 
Answer: A
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Solve the problem.A textile company has specific dyeing and drying times for its different cloths. A roll of Cloth A requires 50 minutes of dyeing time and 45 minutes of drying time. A roll of Cloth B requires 60 minutes of dyeing time and 25 minutes of drying time. The production division allocates 2360 minutes of dyeing time and 1660 minutes of drying time for the week. How many rolls of each cloth can be dyed and dried?
A. 11 rolls of Cloth A, 40 rolls of Cloth B B. 18 rolls of Cloth A, 28 rolls of Cloth B C. 28 rolls of Cloth A, 16 rolls of Cloth B D. 21 rolls of Cloth A, 31 rolls of Cloth B
Decide whether the given functions are inverses.f = {(-3, -6), (0, 4), (4, -3), (8, 10)}g = {(-6, -3), (4, 0),(-3, 4), (10, 8)}
A. No B. Yes
If the function is one-to-one, find its inverse. If not, write "not one-to-one."f(x) = (x - 6)2
A. f-1(x) = 
B. f-1(x) = 
C. not a one-to-one
D. f-1(x) = 
+ 6
Graph the ellipse.9(x - 1)2 + 4(y - 2)2 = 36 
A. 
B. 
C. 
D. 