Answer:
After 4 days, the number of people attending both conferences be the same.
Step-by-step explanation:
We are given the following in the question:
Maths conference:
Number of people already signed = 7
Number of people who sign up each day = 2
Thus, the number of people who will sign up for maths conference in x days will be given by the linear function:

History conference:
Number of people already signed =11
Number of people who sign up each day = 1
Thus, the number of people who will sign up for maths conference in x days will be given by the linear function:

Both conference will have same number of people when

Thus, after 4 days, the number of people attending both conferences be the same.
The answer would be $3 becaus of x = $12 and y = $9. $12 - $9 = $3.
Answer:
Louise is 16
Todd is 18
Step-by-step explanation:
There are 160 small cars that were washed because u divide
800/ 5= 160. :P
Hope this helps you!!
B. 40, 120, 360, 1080
C. 200,20,2,0.2,0.002