Jayne's cupboard had 48 packages of ramen. she used 4 packages eacg day for 5 days. how many packages of ramen noodles are left?

Really need on these. i have no idea what to do

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

If you have the following equation, 2/3x+5/6-x=2-3/4x what would you multiply each term by to get rid of all the fractions