Bao Yu is completing the square to solve the polynomial equation. x2 – x – 3 = 0

What should be her first step?

adding –x to both sides of the equation
adding –3 to both sides of the equation
isolating the first term, x2
isolating the constant, –3

The amount of energy it takes to lift a box might be a function of which of the following

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

Which expression is not a polynomial?