Solve the problem.To measure the width of a river, a surveyor starts at point A on one bank and walks 74 feet down the river to point B. He then measures the angle ABC to be 
Estimate the width of the river to the nearest foot. See the figure below. C
A74 ftB
A. 29 ft
B. 188 ft
C. 69 ft
D. 27 ft
Answer: A
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Use the four-step method in problem solving to solve the problem.A couch sells for $1260. Instead of paying the total amount at the time of purchase, the same couch can be bought by paying $500 down and $80 a month for 12 months. How much is saved by paying the total amount at the time of purchase?
A. $1080 B. $200 C. $300 D. $20
What property of whole-number multiplication justifies the equality?0 ? 38 = 0
A. Closure property B. Commutative property C. Multiplicative-identity property D. Multiplication-by-zero property
Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 
, y = 0, x = 1, x = 9
A. ?ln 9
B. 
?
C. 
?
D. 
?
Write the first four terms of the sequence.
A. 
, - 
, 
, - 
B. 
, - 
, 
, - 
C. - 
, 
, - 
, 
D. - 
, 
, - 
, 