Solve the equation.
+ 6 = 9
A. {3}
B. {15, -15}
C. {3, -3}
D. {-3}
Answer: C
Mathematics
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Find the product, if possible. 
A. 
B. 
C. 
D. 
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Express the number in decimal notation.8.1 × 105
A. 81,000 B. 8,100,000 C. 405 D. 810,000
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Find the inverse of the function.f(x) = 
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 
Mathematics
Solve the problem.A lot is in the shape of a right triangle. The shorter leg measures 120 m. The hypotenuse is 40 m longer than the length of the longer leg. How long is the longer leg?
A. 120 m B. 240 m C. 200 m D. 160 m
Mathematics