This is for calculus I will make u brainliest if u got the best answers to all three parts Please solve each part and show work for all parts thank you

Tomas used 3 1/3 cups of flour and now has 1 2/3cups left. which equation can he use to find f, the number of cups of flour he had to begin with? f+3 1/3=1 2/3 f-3 1/3=1 2/3 3 1/3f=1 2/3 f/3 1/3=1 2/3

Answer for 10 points show work you guys in advanced < 3

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?