Answer:
20 sec
Step-by-step explanation:
the average adult male can run 100 m in 18 seconds, you could reasonably assume 20 seconds is a fair answer
a. Let us say that c(x) is the cost of one t shirt based
on the number of increases therefore:
c = 10 + x
b. Say that t(x) is the number of t shirts sold based on
the number of increases so:
t = 2500 – 100 x
b. The revenue is simply the product:
r(x) = (10 + x) (2500 – 100 x)
Combining:
r(x) = 25000 – 1000 x + 2500 x – 100 x^2
r(x) = 25000 + 1500 x – 100 x^2
Taking the 1st derivative and setting dr / dx
= 0 to get the maxima:
dr / dx = 1500 – 200 x
1500 = 200 x
x = 7.5
t = 2500 – 100 x = 2500 – 100 (7.5) = 1750
Hence 1750 shirts should be sold.
<span> </span>
To scale them up by 5 you just have to multiply...
.05 x 5 = .25
1/2 x 5 = 5/2 = 2 1/2 = 2.5
7 x 5 = 35
13 x 5 = 65
25 = 125
102 = 510
<span>(12xy)^2
Expand:
12^2*x^2*y^2
= 144x^2*y^2</span>
Pretty much trade. You give vendor money or currency in return they give you the thing you paid for.