4. It cost $60 to be a member of Allentown ski club. Ski club members can buy an all-day lift ticket for $30. If you are not a member it costs $50 to buy an all-day
lift ticket. The system of equations describe the relationship between the cost
(C) and the number of days (d). C=30d+60, C=50d, How much does it cost to ski
5 days if you are a ski club member? Explain how you got your answer. *
I
Your answer
5. How much does it cost to ski 5 days if you are not a member? Explain how you
got your answer. *

step-by-step :

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:

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock