The ans for a) is 26200$
for b) is 24400$
for c) is 16.3 years
Answer:
4:12 6:18 :) I hope this is ok (I haven't done ratios in a while lol)
Answer:
the answer would be 2x^2-4x
30 + 8 = 38 desks
38 x 4 = 152 legs
If you did not add those eight desks then you will have 120 legs.
So, the amount of legs will go up by 32 if you add 8 more desks.
Answer:
1440 different arrangements are possible.
Step-by-step explanation:
Number of arrangements of n elements:
The number of arrangements of n elements is given by:

In this question:
6 couples, in which each can be positioned in 2 ways(him/her or her/him). So

1440 different arrangements are possible.