Astore offers a 15% discount on all items in the store during a sale. all store employees get an additional 10% employee discount. in the equation below, c represents the cost of an item for an employee including tax and x represents the original price of the item:
c = 0.765x + 0.06(0.765x)
chris is an employee at the store. he plans to buy a coat during the sale. the price of the coat before the discount is $100. how much will chris pay for the coat during the sale?

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

Can someone answer this question? : )

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.