Step-by-step explanation:
To write a polynomial in standard form, put the degree that are the greatest first
So here it would be

Remember constant are numbers that you learned back in elementary,
Numbers like 10,90,4,1,0,-3 etc.
Remember that constant are basically represented like this

For example, 10 is represented like

Since 0 is the smallest degree possible, for a polynomial, constants are the last term of a polynomial in standard form
Answer:
6250
Step-by-step explanation:
75*75 =5625
25*25= 625
add 5625 + 625 = 6250
Function: 12+0.5x
12+0.5x=18.5
0.5x=6.5
x=13 days