Ablouse that cost $16.85 is on sale for 45% off. what is the amount of the discount?

Will give brainliest what is the value of x? enter your answer in the box.

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11