Answer:
and 
Step-by-step explanation:
Given
5 daises to 2 roses
Required
Determine the relationship between them
The question shows a direct proportion between number of daises and roses.
i.e.

Where d = daises and r = roses
Convert the above expression to an equation

Make k the subject

When d = 5 and r = 2;


So, the first relationship between d and r can be gotten by substituting 2.5 for k in d = kr
So:

----------- (1)
Make r the subject in (1)
------------------------(2)
Hence, the relationships between d and r are:
and 
The answer should be 31
(10(3)+8)-(1(3)+4)
(30+8)-(3+4)
= 31
Answer: 3
Step-by-step explanation:
Scale factor is the ratio of the corresponding sides, so:

Jim will maintain the distance if he goes to school at the same speed as Jenny's.
Jim's speed must be 2 2/3 mph.