Multiply. Write the answer in simplest form.
? 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find d2y/dx2 without eliminating the parameter.x = ln(5t), y = ln(8t)7, t > 0
A. 0
B. - 
C. 7
D. 
Mathematics
Solve the problem.A ball is thrown vertically upward from the top of a building 128 feet tall with an initial velocity of 112 feet per second. The distance s (in feet) of the ball from the ground after t seconds is 
After how many seconds does the ball strike the ground?
A. 10 sec B. 8 sec C. 129 sec D. 7 sec
Mathematics
Find the axis of symmetry of the given function.f(x) = -2x2 - 16x - 31
A. x = 1 B. x = -1 C. x = 4 D. x = -4
Mathematics
Look for a pattern and then predict the general term, or nth term, an, of the sequence.9, 21, 33, 45, 57, . . .
A. an = 3n - 12 B. an = 12n - 1 C. an = 3(4n - 1) D. an = 9(12)n-1
Mathematics