Use the properties of real numbers to simplify the expression.- 
(8y - 2x - 8z)
A. -20y - 5x + 20z
B. -20y - 5x - 20z
C. -20y + 5x + 20z
D. -20y + 5x - 20z
Answer: C
Mathematics
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Solve the problem.Suppose the sales of a particular brand of appliance are modeled by the linear function 
, where S(x) represents the number of sales in year x, with 
corresponding to 1982. Find the number of sales in 1991.
A. 5740 B. 11,610 C. 11,740 D. 5870
Mathematics
Find IT in the circuit below if IR = 3 mA and IC = 4 mA. Express your answer in both rectangular and polar form.
Mathematics
Decompose v into two vectors v1 and v2, where v1 is parallel to w and v2 is orthogonal to w.v = i - 4j,
w = 3i + j
A.
v1 = -  i -  j, v2 =  i -  j |
B. v1 = -
i - 
j, v2 = - 
i - 
jC. v1 = -
i - 
j, v2 = 
i - 
jD. v1 = -
i - 
j, v2 = 
i - 
j
Mathematics
Find the rule that defines each piecewise-defined function.
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Mathematics