
can be simplified to by adding the 7 and 10 to get

.

cannot be simplified any more by combining like terms.
By distributing the 2b into the parentheses, you can simplify the expression:

Here you can just add:

Thus, the only expression that cannot simplify any more using adding like terms is the second,

.
Y = 0.08x2-1.6x+13 and y = 0.08(x-10)2<span>+5 is the correct answer :)</span>