A computer store buys a computer system at a cost of $487.20. The selling price was first at $812 , but then the store advertised a 30% markdown on the system. Answer parts a and b. a. Find the current sale price.
b. Members of the store's loyalty club get an additional 10% off their computer purchases. How much do club members pay for the computer with their discount?

Which value would be a solution for x in the inequality 47-4x< 7

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca