Write parentheses around the two addends that would be easiest to add. Then find the sum.
+ 9 + 11
A. 
+ (9 + 11) = 
B. 
+ (9 + 11) = 
C. (
+ 9 + 11) = 
D. 
+ (9 + 11) = 8
Answer: A
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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
Solve the problem.The annual population density of a species of insect after n years is modeled by a sequence. Suppose that the initial density of insects is 678 with r = 0.8. Write a recursive sequence that describes this data, where an denotes the insect density during year n.
A. an = 0.8 an-1 , a1 = 678
B. an = 0.8 an+1 , a1 = 339
C. an = 0.8 + an-1 , a1 = 678
D. an = 
, a1 = 678
Solve.x + 
= 
A. 1
B. 
C. 
D. 
For the following exercise, (a) plot the graph of the function f, (b) write an integral giving the arc length of the graph of the function over the indicated interval, and (c) find the arc length of the curve accurate to two decimal places. 
What will be an ideal response?