Answer:
The bill is $1837.5
Step-by-step explanation:
Given


--- The variation
T = 35; when B = 210
Required
Find B when T = 40

Express as an equation

Make k the subject

<em>T = 35; when B = 210</em>


When T = 40, we have:


Make B the subject


Same!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
i pick my answer as 3
Step-by-step explanation:
7-4=3