Solve.The table shows an area's population (in millions) every 10 years from 1965 to 2005. What was the difference in population from 1975 to 2005? 
A. 3.906 million
B. 1.116 million
C. 32.364 million
D. 2.79 million
Answer: D
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Factor completely, or state that the polynomial is prime.x3 + 2x2 + x + 2
A. (x2 + 2)(x + 1) B. (2x2 + 2)(x + 1) C. (x2 + 1)(x + 2) D. (x2 + 1)(2x + 2)
Simplify the sum.(z - 7) + (3z - 3)
A. 4z + 10 B. 4z - 10 C. 3z - 10 D. 8z
Solve the problem.Shelly can cut a lawn with a riding mower in 2 hours less time than it takes William to cut the lawn with a push mower. If they can cut the lawn in 5 hours working together find how long to the nearest tenth of an hour it takes for William to cut the lawn alone.
A. 9.1 hours B. 11.1 hours C. 11.2 hours D. 9.2 hours
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos ? = - 
, ? < ? < 
Find cos 
.
A. 
B. 
C. - 
D. - 