Let x(t) be a harmful insect population (aphids? ) that under natural conditions is held somewhat in check by a benign predator insect population y(t) ( assume that x(t) and y(t) satisfy the predator-prey equations so that the static equilibrium populations are

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Select the number of ways in which a line and a circle can intersect

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?