Find the value of the expression.|3| + |-4|

A. 1
B. -1
C. -7
D. 7

Answer: D

Mathematics

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Find the difference.[-21.3 + (16.3 - 3.2)] - 2.8

A. -5.4 B. 31.6 C. -38 D. -11

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Find all real solutions to the system of equations using the addition method.x2 + y2 = 68x2 - y2 = -60

A. (2, 8), (8, 2), (-2, -8), (-8, -2) B. (2, -8), (2, 8) C. (2, 8), (-2, 8), (2, -8), (-2, -8) D. (-2, -8), (-8, -2)

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For the given function f(x), find f-1(x).f(x) = 

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B. f-1(x) = 
C. Not one-to-one
D. f-1(x) = 

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