Answer:
The court cost $5 per square foot of sand
Step-by-step explanation:
step 1
Find the area of the volleyball court
The area of the rectangular court is equal to
we have
substitute
step 2
Divide the total cost to have the sand put into the court by the area of the court
so
therefore
The court cost $5 per square foot of sand
By applying basic property of Geometric progression we can say that sum of 15 terms of a sequence whose first three terms are 5, -10 and 2 is
Sequence is collection of numbers with some pattern .
Given sequence
We can see that
and
Hence we can say that given sequence is Geometric progression whose first term is 5 and common ratio is -2
Now term of this Geometric progression can be written as
So summation of 15 terms can be written as
By applying basic property of Geometric progression we can say that sum of 15 terms of a sequence whose first three terms are 5, -10 and 2 is
To learn more about Geometric progression visit : brainly.com/question/14320920