$3.23 = 4 1/5c - .55
4 1/5c = the pounds of plums, and the cost of each pound. - .55 represents subtracting the coupon.
10/12 = 5/6 probability that she will not win on the next roll
7.75 pounds of seed are needed per acre
If 
, then we can immediately cancel the factors of 
:
Factorize the numerator and denominator:
Next, if 
, then
V=(1/3)hπr^2 where h=height and r=radius
given
radius=3
height=2a
r=3
h=2a
v=(1/3)hπr^2
v=(1/3)(2a)π(3)^2
v=(1/3)2aπ9
v=6aπ
so the expression would be some variaant of v=6aπ
