Answer:
About $4.46
because you can't pay 4.466666667
Step-by-step explanation:
6 people
4 tacos------$5.00
2 burgers--$5.30
4 fries-------$9.00
6 juices-----$7.50
_______________
food ---------$26.80
divide $26.80 by the number of people so 6 then you get 4.466666667 and have to round up
R=rate of boat in still water
c=rate of current
d=rt
since you're given that the time it takes to travel the same distance downstream and upstream, your equation will be d_1=d_2, or rt=rt
the rate upstream is r-c and the rate downstream is r+c (because the boat's and river's rates add up)
since you know t_1 and t_1 are 5 and 3, you can now set up 2 equations
<u>5*(r-c)=45</u> because (time upstream)*(rate upstream)=distance=45 miles
r-c=45/5=9
<u>3*(r+c)=45</u>
r+c=45/3=15
r-c=9 and r+c=15, so r=12 mi/h and c=3 mi/h
If you have any questions please ask
Answer:
Remember, the expansion of 
.
Then,
a) since 
, then 
. Therefore, the coefficient of 
is 
b) 
. Then k=5 and the coefficient of the term is 
c) 
, then k=4 and the coefficient of the term is 
I=PRT/100
720=1000x9xT/100
72000=9000T
T=72000/9000
T=8years
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