Help i will give the crown thing at the bottom i know what the crown thing at the bottom is called but everytime i write it said i have to write something nice

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?

What is the value of x in the diagram below?

What is the definition of exponential decay?