Solve.How many different 4-digit sequences can be formed using the digits 0, 1, . . ., 9 if repetition of digits is allowed?
A. 6,561
B. 10,000
C. 36
D. 0.16666667
Answer: B
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Find the area of the region specified in polar coordinates.One leaf of the rose curve r = 8 cos 3?
A. 
?
B. 
?
C. 32?
D. 16?
Write expanded notation.5070
A. 5 ten thousands + 7 thousands + 0 hundreds + 0 tens + 0 ones B. 507 thousands C. 5 thousands + 0 hundreds + 7 tens + 0 ones D. 5 hundreds + 0 tens + 7 ones
Solve the problem.A numbers game run by many state governments allows a player to select a three-digit number from 000 to 999. There are 1000 such numbers. A bet of $8 is placed on a number. If the number is selected, the player wins 
. If any other number is selected, the player wins nothing. Find the expected value for the game.
A. $7.20 B. -$7.20 C. -$0.80 D. $0.80
Factor completely.x2 + 7xy - 144y2
A. (x - 16y)(x + y) B. (x + 16y)(x - 9y) C. prime D. (x - 16y)(x + 9y)