Sixty square feet you can look it up!
I believe the answer is letter A
Answer:
Part 1) 
Part 2) The length of the hypotenuse is 6 units
Step-by-step explanation:
Part 1) we know that
In the right triangle of the figure
----> by SOH (opposite side divided by the hypotenuse)
solve for y

Remember that

substitute


Part 2)
Let
h ----> the length of the hypotenuse
we know that
In the right triangle of the figure
----> by SOH (opposite side divided by the hypotenuse)

Remember that

substitute


The answer is B
The correct inverse of 3x+1 is actually (1/3)x - 1/3
plug in 10 to the inverse
10/3 - 1/3 = 9/3 or 3
this gives you the point (10,3)