1) Tessa is cooking potatoes for dinner. She puts some potatoes in an oven pre-heated to 200°F. The graph below shows the temperature of the potatoes over time. The y-intercept of the graph is (0,20).
Tell the story of the graph. Include all key features.
Temp (F)
240
220

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400

answer: there are 453.592 grams in a pound.

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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step-by-step explanation: