Solve the problem.To find the distance AB across a river, a distance BC of 1215 m is laid off on one side of the river. It is found that B = 102.4° and 
Find AB. Round to the nearest meter.
A. 358 m
B. 413 m
C. 416 m
D. 361 m
Answer: B
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Solve.Linda and Dave leave simultaneously from the same starting point biking in opposite directions. Linda bikes at 6 miles per hour and Dave bikes at 9 miles per hour. How long will it be until they are 30 miles apart from each other?
A. 
hr
B. 2 hr
C. 10 hr
D. 
hr
Without graphing, find the maximum value or minimum value.f(x) = 5
2 + 11
A. -11
B. 11
C. 
D. 5
Solve the problem.The decay of 431 mg of an isotope is given by A(t) = 431e-0.032t, where t is time in years. Find the amount left after 32 years.
A. 78 mg B. 150 mg C. 155 mg D. 417 mg
Find two sets of parametric equations for the given rectangular equation.y = 9x + 7
A. x = t, y = 9t + 7; -? < t < ?
x = 
, y = t + 7; -? < t < ?
B. x = 9t, y = t + 7; -? < t < ?
x = 
, y = t + 7; -? < t < ?
C. x = t, y = 9t + 7; -? < t < ?
x = 9t, y = t + 7; -? < t < ?
D. x = t, y = 9t + 7; -? < t < ?
x = t, y = 
+ 7; -? < t < ?