Simplify the expression. Write the answer with only positive exponents. Assume that all variables represent positive real numbers.
A. 
B. 39/5m5
C. 69/25m6
D. -37/5m5
Answer: B
Mathematics
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The temperature on a certain day as measured at the airport of a city is changing at the rate of
?
?
F/hr, where t is measured in hours, with 
corresponding to 6 a.m. The temperature at 6 a.m. was 23F. What was the temperature at 9 a.m.? Please round your answer to whole degrees.
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Graph the function.y = cot(4x)
A. 
B. 
C. 
D. 
Mathematics
Find the product.(-1)3(-4)4
A. -256 B. 48 C. 255 D. 256
Mathematics
Show that the equation is not an identity by listing the value(s) of the variable from among 0, ?/4, ?/2, and - ?/4 for which the equation is false.(tan ? + 1)2 = sec2 ?
A. 
, 
, and - 
B. 
and - 
C. 
, 
, and 0
D. 
and 0
Mathematics