Murphy is doing a duathlon which consists of a 10-mile running portion and a 40-mile biking portion. Enter an equation that shows the pace, in minutes per mile, that Murphy needs to run (r), as well as the pace, in minutes per mile, that he needs to bike (b) in order to complete the duathlon in 220 minutes.

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

Simplify. −4x^2 (5x^4−3x^2+x−2) −20x^6−12x^4+8x^3−8x^2 −20x^6+12x^4−4x^3+8x^2 −20x^8+12x^4−4x^2+8x −20x^6+12x^4+4x^3−8x^2

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?