Factor by grouping.12r2 + 18ry - 2xr - 3xy
A. (2r + 3y)(x - 6r)
B. (2r + 3y)(6r - x)
C. (2r + 3y)(6x - r)
D. (3r + 2y)(6r - x)
Answer: B
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The length L, in centimeters, of a certain fish depends on the age t, in years. The relationship is
.
?
Fish between lengths of 34.50 and 39.50 centimeters long are suitable for harvesting. Over what age range is the fish suitable for harvesting? Round your answer to two decimal places.
A. 4.90 years or older B. 12.59 years or older C. Between 3.49 and 4.90 years old D. Between 8.47 and 12.59 years old.
Solve the problem.Five men recorded their average time to run a mile. The results are shown in the bar graph below. Times are in minutes. How much faster is Randy's average time than Graham's? 
A. 0.36 min B. 0.66 min C. 1.13 min D. 0.56 min
Fill in the blank with one of the words or phrases listed below. 
To find the 
of a rectangle, multiply length times width.
A. area B. product C. solution D. perimeter
Complete the identity.
- 
= ?
A. 1 - sin ? B. -sec2 ? C. 0 D. 1