Solve.How many different three-digit numbers can be written using digits from the set {1, 2, 3, 4, 5} without any repeating digits?
A. 10
B. 120
C. 60
D. 20
Answer: C
Mathematics
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Find the largest open interval where the function is changing as requested.Increasing y = (x2 - 9)2
A. (-3, 3) B. (-3, 0) C. (3, ?) D. (-?, 0)
Mathematics
Use the vertex formula to find the vertex of the quadratic function.f(x) = -x2 - 8x + 4
A. (-8, 4) B. (4, -44) C. (-4, 20) D. (4, -12)
Mathematics
For the given polar equation, write an equivalent rectangular equation.r = 1 + 2 sin ?
A. 
= x2 + y2 + 2y
B. x2 + y2 = 
+ 2x
C. x2 + y2 = 
+ 2y
D. 
= x2 + y2 + 2x
Mathematics
Graph the hyperbola and label all intercepts.
- 
= 1
A. 
(0, 8), (0, -8)
B. 
(-2, 0), (2, 0)
C. 
(0, 2), (0, -2)
D. 
(-8, 0), (8, 0)
Mathematics