Hello. This might not be the least of helpful but your over thinking this a little bit to much, this is very easy so here is what I want you to do, I want you to calm down and clear everything out of your mind, then you'll start seeing things you haven't. I'm a sixth grader studying 7th grade math, I over think the questions to much so I have a hard time also please don't watch YouTube while doing your homework
First take numbers on side :
Go to sleep buddy or watch a movie
Answer:
They are both the same at 3/4 of an hour
Step-by-step explanation:
We have a system of equations here. The first one is for Friday:
3A + 5B = 6, which says that 3 people at the number of hours for plan A plus 5 people at the number of hours for plan B equals 6 hours total.
The second equation is for Saturday:
9A + 7B = 12, which says that 9 people at the number of hours for plan A plus 7 people at th number of hours for plan B equals 12 hours total.
We can solve this easily using the addition/elimination method. Begin by multipying the first equation through by a -3 to eliminate the A's. That gives you a new first equation of:
-9A - 15B = -18
9A + 7B = 12
You can see that the A's are eliminated, and adding what remains leaves us with
-8B = -6 so
B = 3/4 hour
Now we can sub that back in for B in either one of our original equations to solve for A. I changed the 3/4 to .75 for ease of multiplying:
9A + 7(.75) = 12 and
9A + 5.25 = 12 and
9A = 6.75 so
A = .75 which is also 3/4 of an hour
Answer: 
Step-by-step explanation:
Here the function that shows the total area of mulch,
Also, the function that shows the total cost mulch that requires,
By putting the value of m,
We get,
Where x is the radius of the circle.
Thus, First option is correct.
