The expression 12g gives the number of kilograms a car can travel using g liters of gasoline. how far can this car travel on 5 1/2 liters of gasoline?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

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?

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds.then use the distributive property and mental math to evaluate the expression.