If you could me out with this study guide that'd be much appreciated

Complete the truth table a. t, f, f, t b. t f f f c. f t f t d f t f t

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.