Rumble, Grumble When David is hungry, he gets grouchy. When he isn't hungry, he stays in a good mood. In other words, David's mood is a function of his hunger level. David's friend Karla usually has positive feelings toward him. But when he is grouchy, Karla gets irritated with him. In other words, Karla's attitude toward David is a function of his mood. Assume David eats three meals a day, at regular times, so that his hunger level is a function of the time of day. Sketch a graph of Karla's feelings toward David as a function of time over the course of two days.

Students buying lunch at rockwell elementary school yesterday chose either burritos or pizza. 185 students chose burritos and 252 chose pizza. 1. estimate the number of students who brought lunch by rounding each number to the nearest hundred. 2. estimate how many students bought lunch by rounding each number to the nearest ten. 3. find the total number of students who brought lunch. which of your estimates is closer to the actual total? explain. 4. draw a figure on a sheet of paper. estimate how many pennies will fit inside the figure. check your prediction using pennies.

The graph of y = ax^2 + bx + c is a parabola that opens up and has a vertex at (0, 5). what is the solution set of the related equation 0 = ax%2 + bx + c?

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.