You are holding one of the tethers attached to the top of a giant character balloon in a parade. Before the start of the parade the balloon is upright and the bottom is floating approximately 20 feet above ground level. You are standing approximately a = 130 feet ahead of the balloon (see figure).
?
?
Find an expression for the angle of elevation from you to the top of the balloon.
?
A. 
B. 
C. 
D. 
E. 
Answer: A
Mathematics
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of two cosine expressions.
A. quotient, difference B. product, difference C. product, sum D. quotient, sum
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Differentiate.f(t) = 
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C. f'(t) = 
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Write the expression as a single logarithm.log4 9 - log4 13
A. log8 
B. log4 
C. log4 
D. log4 (-4)
Mathematics
Solve the problem.Julie rode her bicycle 7 km in one afternoon. How many meters did she ride?
A. 0.007 m B. 700 m C. 0.07 m D. 7,000 m
Mathematics