Factor completely. If the polynomial cannot be factored, say it is prime.9x2 - 1
A. (3x + 1)2
B. (3x - 1)2
C. (3x - 1)(3x + 1)
D. prime
Answer: C
You might also like to view...
Solve the problem.The strength S of a rectangular wooden beam is proportional to its width times the square of its depth. Find the dimensions of the strongest beam that can be cut from a 
cylindrical log. (Round answers to the nearest tenth.)
A. w = 6.8 in.; d = 9.2 in. B. w = 4.8 in.; d = 9.2 in. C. w = 5.8 in.; d = 8.2 in. D. w = 6.8 in.; d = 7.2 in.
Use unit ratios to convert the units.36,960 feet to miles
A. 7 mi B. 184.8 mi C. 7.5 mi D. 8 mi
Solve the problem.Acme Industries pays at the time-and-a-half rate for all time worked over 8 hours in any one day no matter how many hours are worked in a week. Susan Jones, an employee of Acme Industries, makes $14.32 an hour as her regular rate of pay. Last week she worked 9 hours on Monday, 6.5 hours on Tuesday, 10.25 hours on Wednesday, 7 hours on Thursday, and 12 hours on Friday. What were her gross earnings for the week?
A. $643.73 B. $692.73 C. $660.73 D. $765.73
Find an equation of the secant line containing (1, f(1)) and (2, f(2)).f(x) = 
A. y = (-
+ 9)x + 
- 18
B. y = (
- 9)x - 
+ 18
C. y = (-
- 9)x - 
+ 18
D. y = (
- 9)x + 
- 18