Solve using Cramer's rule.2x + 2y = 322x - 3y = -3
A. (-7, 9)
B. (9, 7)
C. (7, 9)
D. (-9, -7)
Answer: B
Mathematics
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Round following numbers as indicated.8.818 (nearest tenth)
A. 8.9 B. 8.8 C. 8.82 D. 8.7
Mathematics
Solve the problem.In a chemistry class, 3 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 3.0 L B. 0.5 L C. 1.5 L D. 2.5 L
Mathematics
Find the slope of the line.x = -2
A. -2 B. undefined C. 0 D. 2
Mathematics
For the function f, use composition of functions to show that f-1 is as given.
, 
What will be an ideal response?
Mathematics