Solve the system of equations using the elimination method.
A. (7, 0)
B. (7, 1)
C. (6, 1)
D. No solution
Answer: A
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Determine if the given value is a solution to the given equation.-4,
4 + x = 0
A. Yes B. No
Solve using the elimination method. Use a graphing calculator to check your answer.-6x + 11 = -7y-3x + 2y = -7
A. (2, 2) B. (3, 1) C. (3, 2) D. No solution
Write the fraction as a decimal. If necessary, use repeating decimal notation.1
A. 1.4
B. 1.45
C. 1.
D. 1.
Solve the problem.Suppose there are two low-frequency sound waves with similar frequencies. Let 
and 
model the two tones where t is time measured in seconds. Write the sum 
as a product of two trigonometric functions, and determine the frequency of the beats.
A. 3 beats per second 0.004 cos (93?t) cos (3?t) B. 1.5 beats per second 0.004 cos (46.5?t) cos(1.5?t) C. no beats 0.004 cos (46.5?t) cos (46.5?t) D. no beats 0.004 cos (93?t) cos (93?t)