In a test flight of the McCord Terrier, McCord Aviation's experimental VTOL (vertical takeoff and landing) aircraft, it was determined that t sec after liftoff, when the craft was operated in the vertical takeoff mode, its altitude (in feet) was
?
.
?
Find an expression for the craft's acceleration at time t.
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: C
Mathematics
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Assuming all variables are positive, use properties of logarithms to write the expression as a sum or difference of logarithms or multiples of logarithms.log89x
A. log8 9 + log8 x B. log4 9 - log4 x C. log4 9 + log4 x D. log8 9 - log8 x
Mathematics
Give a written response.Can you name a number whose absolute value is -46? Explain your answer.
What will be an ideal response?
Mathematics
Solve.Under typical conditions, 1
ft of snow will melt to 2 in. of water. To how many inches of water will 2
ft of snow melt?
A. 4
in.
B. 3
in.
C. 3 in.
D. 3
in.
Mathematics
Find 
, where 
and R is the indicated domain. (Remember that you often have a choice as to the order of integration.)
?
?
?
A. 32.4
B. 24.3
C. 16.2
D. 27
E. 259.2
Mathematics