Answer:
Step-by-step explanation:
Let's follow what the problem asks us:
- "The area of a square with side length x"
this is the formula for area: 
since the side length is x, the initial area is: 
- Now, "where the side length is decreased by 3":
The side is now 
, thus the area is: 
- "the area is multiplied by 2"
we had the area 
, when we multiply by 2:
- And finally " then 4 square units are added to the area."
this is: 
-4.5 is NOT a natural number because natural numbers are the set {1, 2, 3, 4, 5, ...} basically positive whole numbers
Y=Mx+b is the correct equation of a line
Turn them into mixed fractions first:
3 1/2 = 7/2 and 4 2/3 = 14/3
Then multiply the fractions:
7/2 x 14/3
Make sure you multiply the denominators together and multiply the numerators together, straight across.
7/2 x 14/3 = 98/6
Now simplify!
98/6 = 16 2/6 = 16 1/3
That’s your answer, 16 1/3
Set up a proportion
4/12=10/x
cross multiply
120=4x
divide by 4
30=x
10 students would spend $30 on the same school lunch
