Juan was gifted a piggy bank for his birthday. he saves up $15 from his allowance in april, $23 in may, $31 in june and so on. how much will juan’s piggy bank contain at the end of 12 months?

He would have a total of $79 at the end of month 12. But, when you add the 15,23,31,etc it would be $423.

$819

Step-by-step explanation:

Well, how you would do this is that Juan gets 8+ the money he gets each month. So for June he would get $39, and July he would get $47, August he would get $55, September he would get 63$, October he would get $71, November he would get $79, December he would get $87, January he would get $95, February he would get $103, and March he would get $111. So, add all those up and you get $819.

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step-by-step explanation:

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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