R=-1/800(x^2-2400x)
use R'=0
R'=1/400x-300, 1/400x=300 => x=1200 critical point
take R(1200), we know its max bcuz of the orientation of R
Find the unit rate for each
$8.31/3 pounds= $2.77 per pound
$12.95/5 pounds= $2.59 per pound
Final answer: The second option is better because you are paying less per pound (2.59<2.77).
Answer:
Step-by-step explanation:
The basic idea is to factor each expression and cancel common factors from numerator and denominator.
How many modes does this data set have? 80, 95, 100, 85, 95, 110, 90, 112, 110, 96, 100
kari74 [83]
Just one. The mode is 95, as there are two.
X represents nickels
y represents dimes
x+y=29
5x+10y=210
multiply the first equation by -5 (elimination method)
-5x-5y=-145
then add the two equations together
5y=65
divide 5 from both sides
y=13
13 dimes