Solve.A credit company allocates 8-digit account numbers such as 1122-3421 where the digits 1 through 9 are used. How many different account numbers can there be?
A. 43,046,721
B. 220,345
C. 13,440
D. 40,320
Answer: A
Mathematics
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What will be an ideal response?
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A. - 175 B. 145 C. - 145 D. - 163
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A. x-intercept: 2; y-intercept: -8 B. x-intercept: 2; y-intercept: 8 C. x-intercept: -2; y-intercept: -8 D. x-intercept: -2; y-intercept: 8
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A. Focus: 
; directrix: x = - 
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; directrix: x = - 
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Mathematics