Substitute 8 for x in the function.
y=50(8)=400
He would travel 400 miles
Percent means parts ot of 100
25%=25/100=1/4
ratio is 1:4 or 2:8 or 6:12
You have to find the area of each face and add them all together. You also need to find the unknown side which is indicated in the picture i attached.
D because you have to use absolute value to solve.