Asack contains red and blue marbles. the ratio of red marbles to blue marbles is 4: 3. if there are 18 blue marbles in the sack, how many red marbles are in the sack?

Write an equation of the line given the two points below (write your equation in slope-intercept form, y=mx+b): (-4, 4) and (6, -4)

The population of a small rural town in the year 2006 was 2,459. the population can be modeled by the function below, where f(x residents and t is the number of years elapsed since 2006. f(t) = 2,459(0.92)

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs