Find the degree of the polynomial.15x8yz - 5x6y2 + x5yz3
A. 8
B. 5
C. 10
D. 6
Answer: C
Mathematics
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Find the focus and directrix of the parabola.y2 = -12x
A. (3, 0); x = -3 B. (0, -3); y = 3 C. (-3, 0); x = 3 D. (-3, 0); y = 3
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Find the derivative of y with respect to x.y = sec-1 
A. 
B. 
C. 
D. 
Mathematics
Complete the factoring.-72z7 = -9z2( )
A. 8z5 B. -8z5 C. 8z2 D. 648z
Mathematics
Solve the problem.Suppose that an investment of $16,000 has grown in value at a rate of 6% per year. If the current value is $21,411.61, then how many years have passed?
A. 6 B. 7.5 C. 4 D. 5
Mathematics