Solve using the elimination method. Use a graphing calculator to check your answer.
x + 
y = 4
x - 2y = 21
A. (6, -8)
B. (-6, 8)
C. (6, 8)
D. (-6, -8)
Answer: A
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Find all points where the function is discontinuous.
A. None B. x = 3 C. x = 0, x = 3 D. x = 0
Solve the problem.Use the sequence of equations to find the unknown sum.1 = 11 - 4 = -31 - 4 + 9 = 6 . . . . . . . . 1 - 4 + 9 - . . . 81 = ?
A. -36 B. 27 C. -55 D. 45
Solve the SSA triangle. Indicate whether the given measurements result in no triangle, one triangle, or two triangles. Solve the resulting triangle. Round the answer to the nearest tenth.B = 41°, a = 4, b = 3
A. Solution 1: A = 61°, C = 78°, c = 0.1 Solution 2: A = 119°, C = 20°, c = 0.1 B. Solution 1: A = 61°, C = 78°, c = 4.5 Solution 2: A = 119°, C = 20°, c = 1.6 C. A = 29°, C = 110°, c = 5.7 D. No triangle exists.
Multiply.(7a - 1)2
A. 49a2 + 1 B. 49a2 - 14a + 1 C. 7a2 + 1 D. 7a2 - 14a + 1