Ryan, michelle, and erwin spent $13.50, $16.50, and $14, respectively, at an amusement park. ryan bought three tickets for the ferris wheel and two tickets for the water slide. michelle bought one ticket for the ferris wheel and four tickets for the merry-go-round. erwin bought three tickets for the ferris wheel, one ticket for the water slide, and one ticket for the merry-go-round. let x, y, and z represent the ticket cost for the ferris wheel, water slide, and merry-go-round, respectively. identify the column entries that belong in the matrix equation that models this situation, a-1b = x.

This photo should be pretty clear on how to answer.

Step-by-step explanation:

step-by-step explanation: so we look at the formula un = a + (n-1)d

un is the amount of seats

n is the nth term aka row number

a is the original sequence/row number

d is the difference between each term

so in this a=22 d=6 and n can remain as n because we are simply formjng a rule

lets put these in the equation

un=22+(n-1)(6)

this is your answer to part a

however

lets double check that this is correct, we'll try putting it into the second term

un=a+(n-1)d

u2=22+(2-1)(6)

u2=22+6

u2=28

as the question said the second row has 28 seats so now we know the formula we made is correct.

as for part b

un=a+(n-1)

its asking us to find a row with 100 seats.

remember un was the amount of seata so all we do is substitute this in.

un=100 a=22 d=6

un=a+(n-1)d

100=22+(n-1)(6)

so now we simplify to find n which is the row number.

100-22=22+(n-1)(6)-22

78=(n-1)(6)

78/6=(n-1)(6)/6

13=n-1

13+1=n-1+1

14=n

so now we know that in the 14th row there is 100 seats.

hope this and that you understood! its my first time using the app or anyone out on here : p its also me to revise so a bunch! ask more questions if you dont understand ☺

lol, i have been using this product for a while and the second half of the year for a lon and the first time in a long time ago that the government has not yet received enough votes to be a good the first place in the world to be able to do it in my world life, i