Sandra wants to buy a dress that is on sale for 20% off. Sandra also gets a 5% discount for being a member of the store's buyer's club. Her buyer's club discount is taken off the sale price of any item. If the original cost of the dress was c dollars, which of the following expressions represents what Sandra would pay, in dollars, for the dress?​

An account with a $250 balance accrues 2% annually. if no deposits or withdrawals are made, which graph can be used to determine approximately how many years will it take for the balance to be $282? it's e2020 ni️️as

Which one is the correct answer, and why?

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).