Answer:
72÷6=12
so at the nursery it cost $12 per shrub
66÷6=11
so at the store it cost $11 per shrub
so if you buy 21 shrubs from the nursery it will cost: 12×21=$252
but if you buy 21 shrubs from the store it only cost: 11×21=$231
$252-$231=$21
The practical rule would be, times that number, by the result of the first time you multiplied the first number. But, it would all depend by how much your're raising the number by.
<u>
For example:</u>

We do,

But, once again, this was an example. This would show and illustrate the rule of "raising a power".<span />
<span>7800nm + 95pm = (7800x 10^-9) + (95x10^-12) = 7.800095</span><span>x10^-6=</span><span>7.800095mm
</span>
2500nm - 7pm = (2500x 10^-9) + (7x10^-12) = 2.50007x10^-6 = 2.50007mm
(65x10^4m) x (4.5x10^-6s-1) = clarify this question
(24x10^5m) / (2x10^-8s) = clarify this question
Answer:
-10 and 0.25
Step-by-step explanation:
f(4)=-10 and g(x) is 2 when x=0.25