Simplify to form an equivalent expression by combining like terms. 8z - z
A. 7z2
B. -8z2
C. 7z
D. 8z - 1
Answer: C
Mathematics
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Determine whether the statement is true or false.If a > b, then a must be a positive number.
A. True B. False
Mathematics
Simplify the sum.(x + 3) + (x - 15)
A. 2x - 18 B. 2x + 12 C. 2x - 12 D. 2x + 18
Mathematics
Without graphing the function, determine its amplitude or period as requested.y = cos 3xFind the period.
A. 3
B. 1
C. 2?
D. 
Mathematics
Solve the problem.The table represents a linear function. Find the slope and y-intercept of the line and use your answers to write an equation for f(x). 
A. f(x) = -5.1x + 2.1 B. f(x) = 5.1x - 2.1 C. f(x) = 2.1x + 5.1 D. f(x) = -2.1x + 5.1
Mathematics