believe its
$127.82 because if you subtract 10% of 123.50 from itself then add a 15% tip you get 127.82
483,391. You can line the, up vertically and then use simple arithmetic and carrying to solve this problem
8t + 1 + (-4t) + (-6) =
8t + 1 - 4t - 6 =
4t - 5 <==
Given that the concentration has been modeled by the formula:
C(t)=50t/(t^2+25)
where:
t is time in hours.
The concentration after 5 hours will be given by:
t= 5 hours
plugging the value in the equation we get:
C(5)=(50(5))/(5^2+25)
simplifying the above we get:
C(5)=250/(50)=5 mg/dl
Answer: 5 mg/dl
-m-4=-13
-m=-13+4=-9
m=9
☺☺☺☺
