Answer: 
Step-by-step explanation:
You must draw a right triangle as the one attached, where "x" is the lenght in feet of the ramp.
You need to use the following Trigonometric Identity:

In this case you can identify that:

Now you must substitute these values into
:

Finally, you must solve for "x" in order to find its value.
This is:

Answer:
B
Step-by-step explanation:
3(2+x)
distribute
=6+3x
80/100 x 30 = 24 because you just multiply percents
Using the slope-intercept form, the slope is
2
/5 2/5.M=
25
I did that equation on the side and I got 442, I hope this helps