In 2012, the population of the city was 63,000. By 2017, the population was reduced to approximately 54,100. Identify an y equations that are appropriate models for the population of the city, and explain why the others are not

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Deshawn uses 3/4 of a box of rice to cook dinner the portion he uses weighs 12 ounces right and solve an equation to find the weight of the full box of rice

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.