Combine like terms.-5x - 4y + 2 - 8x
A. -15xy
B. -13x - 4y
C. -13x - 4y + 2
D. -13x - 2y
Answer: C
Mathematics
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Use a sum or difference identity to find the exact value.tan 
A. 2 - 
B. - 2 - 
C. 2 + 
D. - 2 + 
Mathematics
Write standard notation for the number in the sentence.The volume of water in the lake is seven billion, eight hundred twenty-one million, ninety-four thousand, six hundred thirteen gallons.
A. 7,821,094,613 B. 782,194,613 C. 7,821,940,613 D. 7,000,821,094,613
Mathematics
The polynomial is given in one of the three forms: standard, root, or factored. Change it to the specified form. f(x) = 7(x + 4)
; write in factored form
A. f(x) = (x + 4)(7x - 8)
B. f(x) = (x + 4)(8x - 7)
C. f(x) = 
(x + 4)(7x - 8)
D. f(x) = 7(x + 4)(7x - 8)
Mathematics
Find g(-3) and g (4) .
A. 8, 13
B. 10, 17
C. 6, 14
D. 8, 18
E. 7, 17
Mathematics