Ageologist found a cubic foot block of ore containing iron and gold. the geologist knows that iron weighs 500 pounds per cubic foot and gold weighs 1200 pounds per cubic foot. if the the block weighs 514 pounds, how many pounds of gold are in the block?

What is the greatest common factor of 6a, 8a^{2}, and 14?

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

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?