Use the associative property of addition to write an equivalent algebraic expression.5 + (3 + x)
A. 3(5 + x)
B. (5 + 3)x
C. (5 + 3) + x
D. 5(3 + x)
Answer: C
Mathematics
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Determine whether the graph of the equation or function has symmetry about the x-axis, the y-axis, and the origin.f(x) = x + 
A. Origin B. y-axis, origin C. y-axis D. No symmetry
Mathematics
Write the function in terms of its cofunction. Assume that any angle in which an unknown appears is an acute angle.cos 31.2°
A. sin 58.8° B. cos 148.8° C. sec 148.8° D. sin 31.2°
Mathematics
Perform the indicated operation and, if possible, simplify. Assume that all variables represent positive real numbers. 
+
A. 5x
+ y3
B. (5x + y9)
C. (5x + y3)
D. (5x3 + y3)
Mathematics
Perform the indicated operation.1.49 kg - 154 g (in kg)
A. -5 g B. 1.336 g C. 1.336 kg D. 1336 kg
Mathematics