Add the numbers 7 + 10
17 - 7j = -10 - 4j
subtract 17 from both sides
-7j = -27 - 4j
add 4j to both sides
-3j = -27
divide both sides by -3
j = 9
5 people - pay 135 each
15 people - pay x each
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5 : 15 = x : 135
15 x = 5 * 135
15 x = 675
x = 675 : 15
x = 45
Answer:
B ) 45.00
Number of difference arrangements = 5! = 5 x 4 x 3 x 2 x 1 = 120
Answer: There are 120 different arrangements.
