Find the exact value of the expression.sin 260° cos 20° - cos 260° sin 20°
A. - 
B. - 
C. 
D. - 
Answer: B
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If possible, evaluate the expression by hand. If not, approximate the answer to the nearest hundredth.167/4
A. 131
B. 
C. 16,384
D. 128
Find the greatest common factor of the list of items.b12, b7, b13
A. b13 B. b7 C. b18 D. b12
Solve.10,500 college students were asked to name their favorite sport. Of this group, 
said basketball, 
said soccer, 
said baseball, 
said they had no favorite sport, and the remainder said volleyball. How many named each sport? 
A. Basketball: 3,500 Soccer: 2,100 Baseball: 1,800 Volleyball: 2,575 None: 525 B. Basketball: 3,500 Soccer: 2,100 Baseball: 1,750 Volleyball: 2,635 None: 515 C. Basketball: 3,500 Soccer: 2,100 Baseball: 1,750 Volleyball: 2,625 None: 525 D. Basketball: 3,500 Soccer: 2,050 Baseball: 1,750 Volleyball: 2,675 None: 525
The revenue (in dollars) from the sale of x units of a product is 
Find the marginal revenue when 8 units are sold and interpret your result.
?
A. 140. So, if the sales go from 8 units sold to 7 units sold, the revenue will increase by about $140. B. 20. So, if the sales go from 8 units sold to 9 units sold, the revenue will increase by about $20. C. 8. So, if the sales go from 8 units sold to 9 units sold, the revenue will increase by about $8. D. 280. So, if the sales go from 8 units sold to 9 units sold, the revenue will increase by about $280. E. 70. So, if the sales go from 8 units sold to 9 units sold, the revenue will increase by about $70.