Everyone do me a favor and nominate "thebecks" as the educator of the year!

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4