Interim Assessments Question for 7.NS.1,2&3
7. A factory needs 175 feet of wire to wrap all the deliveries they will send out for a new housing project. They have the following lengths of wire already:
 2 pieces of wire that are each 12 yards in length
 1 piece of wire that is 65.4 feet in length
How much additional wire, in feet, does the factory need in order to wrap the deliveries?
(A) 85.6 (B) 37.6 (C) 97.6 (D) 312.4
13. Which situation will result in a final result of zero?
(A) The height of a plane after taking off and rising 500 feet.
(B) The amount of change from a $20 note after paying a $15 bill.
(C) The temperature after an increase of 23 from a temperature of 23
(D) The distance above sea level after increasing 13 meters from a depth
of 13 meters below sea level.
17. What is the value of 4/7 x 0.3 ÷ 1/6
(A) 1/35 (B) 35/1 (C) 35/36 (D) 1 1/36
7.NS.2
21. Pizza, calzones, and salads are sold at a pizza shop. Last week, 3/8 of the pizza shop’s profits were from pizza sales and 1/3 of its profits were from selling calzones. The rest of
its profits were from salad sales.
What fraction of the pizza shop’s total profits from last week were from salad sales?
(A) 7/24 (B) 17/24 (C) 3/24 (D) 21/24
7.NS.3
7.NS.1
7.N

d

step-by-step explanation:

given

y + 3 = - 4(x - 2) ← distribute the parenthesis

y + 3 = - 4x + 8 ( subtract 3 from both sides )

y = - 4x + 5 → d

thats not a system of equations, that is a solution

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 ☺