A blueprint for a house has a scale factor n = 45. A wall in the blueprint is 5 in. What is the length of the actual wall

What is 20+(5 x 2/5 )+ 3 show your work

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.