M=20 since 27-m=7 it means that 20+7=27
(c + a = 800)5
5c + 16a = 8400
5c + 5a = 4000
Subtract
11a = 4400
a = 400
There were 400 children and 400 adults
Yes, you are correct because 5x+13=143 is the equation and 5*26+13=143
Hope this helps
Have a fantastic day/night
Answer:

Step-by-step explanation:
Given


Dimension of unpainted area:
--- Square
Required
Determine an expression to solve for x
First, calculate the area of the unpainted space;



The unpainted area, added to the painted area, equals the total area.
So, we have:


Hence, the expression is: 
Answer:
$1,545
Step-by-step explanation:
3% of 1500 is 45
1500 + 45 = 1545