Answer:
see attachment
Step-by-step explanation:
Let the number of yards she trimmed be t
She trimmed 5 more yards than she cut and she mad $415, so
20t+15(t-5)=415
We first distribute the second number so this equals
20t+15t-75=415
Then we add 75 to both sides, getting
20t+15t=490
This means that
35t=490
And we divide both sides by 35 to get
t=14
So, she trimmed 14 yards
To solve for
, we are going to want to get it on one side of the equation by itself, or isolate it. To do this, we can divide both sides of our equation by π, as shown below:



We can see that r = C/pi.
Answer:
D
Step-by-step explanation:
Let cost of member be "m" and cost of non-member be "n".
We know:
3 member and 4 non-member pay $79.
So we can say:

Also, from the problem, we know that:
non-member fee is 11 more than member fee
Thus, we can write:
n = 11 + m
Putting this in 1st equation, we can solve for "m":

Members have to pay $5, so non-members will pay "11" more, that will be:
Non-Members = 11 + 5 = 16
<u>$16, D is the correct answer</u>