Find the value of the expression -x+y*z-y when x= -3 ; y= -2 and z=5

Pls! does anybody know a shortcut for answering these types of questions in the future?

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct