Martey drew a model of the shool library

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?

The quadratic function h(t)=-16.1t^2+150 choose the graph representation

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.