Leah lunch account has a starting balance of $20 .the table shows the remaining balance after a certain number of days. if leah is bringing her lunch to school but buying a sports drink from the cafeteria each day, how much does the sports drink cost?

show work.

  the drink costs $1.25

Step-by-step explanation:

In 4 days, Leah spent $20 -15 = $5. That is, each day, she spent ...

  $5.00/4 = $1.25

If all she bought was a sports drink, then the drink cost was $1.25.

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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answers

rauschg

rauschg · hand

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step-by-step explanation:

i think the amount would be $140.62