Tundra Digital is putting together its R&D budget for the coming year. The firm has compiled a list of potential research and development projects and estimated the interest rate and amount of financial capital required for various levels of R&D spending. The data collected is shown in the table below. Graph the demand curve for Tundra Digital that includes the spillover benefits society enjoys from the company's investment in R&D.

Point Interest Rate Dprivate (in millions) Dsocial (in millions)
A 9% $3 $4
B 8% $4 $5
C 7% $5 $6
D 6% $6 $10
E 5% $9 $15

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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nswer: a   y-axis

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13cm

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(apex)