BASED ON THE GRAPH, WHICH STATEMENT APPEARS TO BE TRUE?

Nine more than four times a number is the same as one less than twice the number. find the number?

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 percent of 18 is 24? and plz explain thx.