Solve the equation. First simplify the expression by combining like terms.-7(k - 7) - (-8k - 6) = 3
A. - 4
B. 52
C. 58
D. - 52
Answer: D
Mathematics
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Find all solutions of the equation. Express the solution in radians.cos x = 
A. 
+ 2n? or 
+ 2n?
B. 
+ 2n? or 
+ 2n?
C. 
+ 2n? or 
+ 2n?
D. 
+ 2n? or 
+ 2n?
Mathematics
Solve the problem.On June 7, Donaldson's Trucking accepts a $3,200 note in settlement of a bill. The note is for 180 days at 8% interest. Donaldson sells the note at a 10% discount rate on July 29. Find the proceeds.
A. $3,174.01 B. $3,233.34 C. $3,209.67 D. $3,208.75
Mathematics
Find the real number solution set of the equation or inequality shown below the graph. y = f(x)
f(x) > 0
A. (-?, -3) ? (-3, ?) B. (-?, ?) C. {-3} D. ?
Mathematics
Find zw or 
as specified. Leave your answer in polar form.z = 6
w = 12
Find 
.
A. 
B. 
C. 
D. 
Mathematics