Factor the polynomial as the difference of two squares or state that it is irreducible.x2 - 49
A. (x + 7)2
B. (x - 7)2
C. (x + 7)(x - 7)
D. irreducible
Answer: C
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Perform the indicated operation.
A. 7 gross 2 dz 1 ones B. 7 gross 2 dz 4 ones C. 7 gross 3 dz 4 ones D. 6 gross 3 dz 4 ones
Solve the problem.The number of traffic accidents has been decreasing in a certain county each year. The data is shown in the table for several recent years. The set of data can be approximated with a linear equation.
Find an equation of the line. Then use the equation to predict the number of traffic accidents in this county in 2027.
A. 155 accidents B. 86 accidents C. 115 accidents D. 144 accidents
Solve the inequality and draw a number line graph of the solution.4x - 6 ? 3x + 1
A. x ? 7
B. x ? 7
C. x < 4
D. x > 4
Find all solutions of the equation.7 cos x + 8
= 5 cos x+ 7
A. x = 
+ n? or x = 
+ n?
B. x = 
+ 2n? or x = 
+ 2n?
C. x = 
+ n? or x = 
+ n?
D. x = 
+ 2n? or x = 
+ 2n?