Ruler
I have to write more so ignore this
Answer:
0.000329
Step-by-step explanation:
Please have a look at attached document.you will get complete solution.
Answer:
(a) The constant of proportionality is 0.25
(b) 1 apple = $0.25
(c) $3 = 12 apples
Step-by-step explanation:
Given

Solving (a): The constant of proportionality;
For an equation:

Where
k = constant of proportionality
By comparing:
to 

Hence, the constant of proportionality is 0.25
Solving (b): What information does
gives.
It represents the unit rate.
<em>So, it means that 1 apple costs $0.25</em>
<em></em>
Solving (c): Number of apples for $3.
This means that 
Substitute 3 for c in 

Make n the subject


Answer:
before the sale, each poster was $8.49
Step-by-step explanation:
27.36 divided by 4 = 6.84 + 1.65 = 849