Sophie opened a picture of a tree on her cell phone screen and zoomed in 2.5 times. The new scale of the picture became 1:168. What would be the scale if it was zoomed in 4 times ?

Which expression gives the area of the triangle shown below

Is the figure congruent? yes or no?

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.