Denise bought a T-shirt at the sale price of $24. The original cost of a T-shirt was $40. What percent represents the discount that Denise received when buying the T-shirt?

Mp model with mathematics explain how the number of text messages dario sent and the cost form an arithmetic sequence.then write an expression to find dario's text messaging bill if he sends n text messages over 250.

Ahigh definition tv cost $800 with a down payment of 2/5 of the cost. how much is left to pay, in dollars after the down payment has been made?

If g(x) = x+1/ x-2 and h (x) =4 - x , what is the value of ( g*h) (-3)?