Answer:
Katie needs to pay $27.9.
Step-by-step explanation:
Given;
Cost of per foot = $2.25
Number of flowers in her yard = 12.4 square foot
We need to find how much she needs to pay.
Solution:
Now we know that;

So for
= Cost for
.
By using Unitary method we get;
Cost for
= 
Hence Katie needs to pay $27.9.
$81 is earned by investing $2700 in one year at 3%.
Answer:
the one you have selected is correct
Step-by-step explanation:
4136/8= 517
The others
7116/8=889.5
4309/8=538.625
9406/8=1175.75