Factor by grouping.12x2 - 20xy + 15xy - 25y2
A. (4x + 5y)(3x - 5y)
B. (12x + 5y)(x - 5y)
C. (4x + 5)(3x - 5)
D. (4x - 5y)(3x - 5y)
Answer: A
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Use the substitution formula to evaluate the integral.
dx
A. 
- 
B. 5
- 8
C. 
- 
D. 
Solve the problem.A study in a small town showed that the percent of residents who have college degrees can be modeled by the function 
where x is the number of years since 2005. According to the model, what percent of residents had a college degree in 2010? Round to the nearest whole number.
A. 73% B. 57% C. 63% D. 68%
Multiply.(2
+ 
)(2
- 
)
A. 4x - y
B. 4x + y
C. 4x - 2
- y
D. 4x2 - y2
Round to the indicated place.The average price of all new cars sold in the U.S. last year was $21,387.08. Round the price to the nearest hundred dollars.
A. $21,390 B. $21,500 C. $21,400 D. $21,300