Perform the operations, the determine whether the statement is true or false. -16 + 21 + (-18) = 19
A. True
B. False
Answer: B
Mathematics
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Answer the question.For f(x) = x2 - 81 and g(x) = 2x + 3, what is the domain of g?f?
A. 
B. 
x ? - 
C. 
x ? - 
D. All real numbers
Mathematics
Simplify.2
+ 5
A. 16 B. 23 C. 407 D. 53
Mathematics
Solve the problem involving direct translation.The product of 4 and the sum of a number and 5 is equal to the difference of twice the number and 9. Find the number.
A. 4x + 5 = 9 - 2x; x = 7
B. 4(x + 5) = 2x - 9; x = - 
C. 4(x + 5) = 9 - 2x; x = - 
D. 4x + 5 = 2x - 9; x = - 7
Mathematics
Solve the exponential equation. Use a calculator to approximate the solution to the nearest thousandth.8x = 4x + 5
A. x ? 2.000 B. x ? 5.000 C. x ? 10.000 D. x ? 2.789
Mathematics