Combine like terms.9.6a + 9.1b - 5.6a - 7.6b
A. -4.0a + 1.5b
B. 4.0a + 16.7b
C. 15.2a + 16.7b
D. 4.0a + 1.5b
Answer: D
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Use the vectors u, v, w, and z head to tail as needed to sketch the indicated vector. 
2u - z - w 
A. 
B. 
C. 
D. 
Find the volume of the shaded solid. Round your answer to 2 decimal places if necessary. Use ? = 3.14 when necessary.
A. 6966.61 cm3 B. 5224.96 cm3 C. 535.89 cm3 D. 17,749.33 cm3
Recent studies show that the number of three-legged frogs in a particular area is increasing due to exposure to chemical pollutants. The first set of data reported in 2000 estimates a population of 5000 three-legged frogs. Statistics show an annual increase of 15%. Let GN denote the number of three-legged frogs projected to inhabit this area in the year 2000 + N.How many three-legged frogs are projected to inhabit this area by 2009? Round to the nearest whole number.
A. 15,295 B. 17,589 C. 7532 D. 10,000 E. 6750
If a set of data has been divided so that the interval is 5, and the data is 110, 110, 111, 112, 112, 113, 114, what is the midpoint of an interval from 110 - 114?
a. 112.5 b. 112 c. 111.5 d. 111