Factor the square of the binomial.z2+ 6z + 9
A. (z - 3)2
B. (z + 6)(z - 6)
C. (z + 3)(z - 3)
D. (z + 3)2
Answer: D
Mathematics
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Factor by grouping.20p2q - 105pq2 + 100q3
A. 5(4p - 5q)(p - 4q2) B. q(20p - 25q)(p - 4q) C. 5q(4p - 4q)(p - 5q) D. 5q(4p - 5q)(p - 4q)
Mathematics
A 450-room hotel is two-thirds filled when the nightly room rate is $80. Experience has shown that each $15 increase in cost results in 30 fewer occupied rooms. Find the nightly rate that will maximize income. ? Please enter your answer as a number without the units.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find an equation of the hyperbola.Vertices at (0, 4), (0, -4); asymptotes at y = ± 
x
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics
For problems 1-13, simplify each expression.
A. 
B. 
C. 
D. 
E. none of these
Mathematics