An art school charges a materials fee in
addition to a fee per class. The equation
below represents the total cost y of x classes
y=40x+25
what is the fee for one class in dollars?

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?