(8/4) = (10/x)
8x = 4 x 10
8x= 40
x = 40/8
x=5
It will take 5 hours.
we have
<u>Find the zeroes of the function</u>
The zeroes of the function are
-------> with multiplicity 
-------> with multiplicity 
therefore
<u>the answer is the option </u>
–5 with multiplicity 2 and 0 with multiplicity 4
see the attached figure
Answer:

f(15) is the area of the rectangular garden for a width of 15 ft
Step-by-step explanation:
we know that

where
x----> is the width of the rectangular garden
(2x+5) ----> is the length of the rectangular garden
so
f(15) -----> is the value of f(x) for x=15 ft
That means
f(15) is the area of the rectangular garden for a width of 15 ft
substitute the value of x and solve


The product of
will be 
Given expression,
We have to find the product of 
Now using distributive property, we get
Hence the product of
is 
Thus the correct option is (D). 
For more details on distributive property follow the link:
brainly.com/question/13130806