Algebra, NAPK4CA23
A biscuit factory produces 72 000 packets of biscuits in a year.
Production is expected to increase by 1500 packets each year.
Which of these will give the best estimate of the production of the biscuit factory in 3 years' time?

`72\ 000 + 1500 xx 3` 

`(72\ 000 + 1500) xx 3` 

`72\ 000 + 1500 + 3` 

`(72\ 000 + 3) xx 1500` 
Algebra, NAPA4NC25
In a set of five consecutive whole numbers, the largest number is given the value `h`.
The smallest number in the set has a value of
`h + 4`  `5  h`  `h  5`  `h  4` 




Algebra, NAPC4CA22
Richard is ascending in a hot air balloon.
The temperature drops by the same amount every 50 metres that Richard ascends.
At ground level the temperature is 31°C.
At a height of 600 metres, the temperature is –5°C.
What is the air temperature at a height of 200 metres?
`text(16°C)`  `text(18°C)`  `text(19°C)`  `text(22°C)` 




Algebra, NAPC4NC05
Australia Post use formulas to calculate the cost of boxes sent in the post to local destinations.
They calculate the size of the box by the formula:
size = width + height + length
The minimum postage applies to boxes with a size of 110 cm or less.
Which box below is oversized?
Length (cm)  Height (cm)  Width (cm)  

40  40  20 

60  10  45 

50  20  40 

40  40  30 
Algebra, NAPE4NC11
Zoe collected 8 baskets of eggs from her chicken coup.
Each basket had the same number of eggs and a total of 96 eggs were collected.
Which equation shows the average number of eggs, `x`, in each basket?

`x = 96 xx 8` 

`x = 96  8` 

`x ÷ 8 = 96` 

`x xx 8 = 96` 
Algebra, NAPG4NC14
Aaron has $3 less than Brendon.
Using `a` for Aaron's money and `b` for Brendon's money, which equation correctly describes this fact?
`a = b + 3`  `a = 3  b`  `a = b  3`  `a = b ÷ 3` 




Algebra, NAPH4CA20
Package Delivery Pty Ltd charges the following for delivering a package with mass `x` kg
`text(Price) = 9 + 4.5x`
What is the mass, in kg, of a package that costs $90 to deliver?
`10`  `18`  `20`  `22` 




Algebra, NAPI4NC13
Ryan and Oliver are buying goldfish for their fish tank.
Oliver buys 3 times the number of goldfish as Ryan does, plus another 5.
Let `m` be the number of goldfish that Ryan buys.
Which expression represents the number of goldfish Oliver buys?
`(3 xx m) + 5`  `3 + (5 xx m)`  `(m ÷ 3)  5`  `3  (m ÷ 5)` 




Algebra, NAPI4NC08
Ali joins a gym that has a fortnightly fee of $33.
Members pay an extra $12 per session if they want to do a special yoga class.
Which expression represents Ali's fortnightly gym bill if she does `x` yoga classes during the fortnight?
`12x`  `33x`  `33x + 12`  `33 + 12x` 



