Since 1990, when the average monthly price for basic cable TV programming in one country was $15.81, the cost has risen by about $1.62 a year. Write an equation in slope-intercept form to predict cable TV costs in the future. Use t to represent time in years after 1990 and C to represent the average basic monthly cost.

Question

Quizplus · Accepted Answer

The equation in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept. In this problem, the slope is $1.62 per year and the y-intercept is $15.81. Thus, the equation is C = 1.62t + 15.81. Choice B is the only one that matches this equation.

Since 1990, When the Average Monthly Price for Basic Cable