Explain two different waysto find the difference for 12-3

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?

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles