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

Variable d represents the time per minute Lilianna spends in the park.

Step-by-step explanation:

Lilianna uses calories per minute just by sitting. She uses 1 more calorie per minute by walking.

Liliana uses a total of calories walking to the park.

Lilianna uses the equation, to represent the situation.

Here, variable d represents the time per minute she spends in the park.

and is given as,

It can be written as,

Solving for d,

Thus, she spend d= 7 minutes total to the park.

graph them on a graphing calculator, press 2nd trace. select intersect. hit enter until it says answer. ti 84 works best

step-by-step explanation:

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: