Answer:
$10
Step-by-step explanation:
divide $4 by 8. you get $.50. multiply that by 20 and you get $10
The third answer (Dividing the area by the height, multiplying the quotient, etc) is correct.
If we multiply by the height, we receive an expression equal to the sum of the bases divided by two. Multiplying by two, we now have the sum of the bases. Subtracting one base gives the length of the other base.
Answer
given,
opera house ticket = $50
attendance = 4000 persons
now,
opera house ticket = $52
attendance = 3800 person
assuming these are the points on the demand curve
(x, p) = (4000,50) and (x,p) = (3800,52)
using point slope formula




R(x) = x . p




at 

x = 4500

hence at x =4500 the revenue is maximum
for maximum revenue ticket price will be

p = $45
Answer:
3 balls per can
Step-by-step explanation:
It there are 3 cans and 9 balls if you just divide 9 balls by 3 cans you get the answer which is 3 balls per can.
1.f=x2+4 --------
4x2+3x
i dont know the second one sorry