3. nora works at a donut shop. at the end of her shift, the change in the tip jar
totals $13.05. the jar contains quarters dimes, and nickels. the number of
dimes is 3 more than twice the number of nickels and the number of quarters
is i less than three times the number of nickels. which system of equations
could be used to find the number of dimes in the jar?
a. 0.25 +0.104 +0.05n = 13.0
c. 0.259 +0.10d +0.05n = 13.05
d=3+2n
d= 3 +2n
q=1 - 3n
q=3n-1
b. 9+d+n= 13.05
d. 9+d+n= 13.05
d=3+27
n= 3+2d
q=3n-1
q=1-31

17 1/3

step-by-step explanation:

360/29

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 ☺