A^2-2ab+b^2-c^2 This is my question from algebric equation please answer

Consider the function f(x)=−2/3x+5 . what is f(1/2) ? enter your answer, as a simplified fraction, in the box. f(1/2)=

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41