The number of new cars purchased in a city can be modeled by the equation C = 20t^2 + 135+ + 3050, where C is the number of new cars and t = 0 corresponds to the number of new cars purchased in 1998. In what year will the number of
new cars purchased reach 15,000?

Without graphing the linear functions, find the coordinates of the point of intersection of their graphs: y=3x−11 and y=4

If given an equation of a line such as -1/2x+6 how would you create an equation of a line parallel and perpendicula to this line that goes through another point such as (4,10)

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?