Solve the problem.A plane flies 430 miles with the wind and 330 miles against the wind in the same length of time. If the average velocity of the wind is 25 mph, what is the average velocity of the plane in still air?
A. 190 mph
B. 195 mph
C. 180 mph
D. 215 mph
Answer: A
Mathematics
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Change the exponential expression to an equivalent expression involving a logarithm.13x = 169
A. log169 13 = x B. logx 169 = 13 C. log13 169 = x D. log169 x = 13
Mathematics
Convert the numeral to the requested form.Some systems of enumeration are multiplicative. If you want to represent 30 things, you write the symbol for 3 followed by the symbol for 10. In China and Japan the symbol for 3 is 
, and the symbol for 
Thus, 30 is symbolized 
. If the symbol
for 8 is 
and the symbol for 6 is 
, how do the Chinese write 80?
A. 
B. 
C. 
D. 
Mathematics
Find f(17) for the function f(x) = 4+2?x -1
What will be an ideal response?
Mathematics
Maximize P subject to the given constraints.
?
?
?
A. 
at 
B. 
at 
C. 
at 
D. 
at 
E. none of these
Mathematics