Which diagram BEST represents the relationship among integers, rational numbers, natural numbers, and whole numbers?

Lilianna uses 3/4 calories per minute just by sitting. she uses 1 more calorie per minute by walking. lilianna uses a total of 12 1/4 calories walking to the park. lilianna uses the equation, d(.75+1)=12.25 to represent the situation. what does the variable d represent in the equation?

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6