Solve the quadratic equation by factoring.x2 + 4x – 77 = 0

Solve the equation by using the quadratic formula.x2 + 7x + 7 = 0

Solve the problem.The formula P = 0.67×2 – 0.046x + 3 models the approximate population P, in thousands, for a species of fish in a local pond, x years after 1997. During what year will the population reach 45.512 thousand fish?

Solve the problem.A recipe calls for 8 ounces of unsweetened chocolate for 12 brownies. How much of unsweetened chocolate is needed to make 30 brownies?

Use the images below to answer the following question. Would you expect a fluorine (F) atom to interact with an argon (Ar) atom? Why or why not? Be specific!         

What does the root co- mean?

Use the image below to answer the following question. You can round 30.974 to 31.     Which of the following images correctly diagrams the phosphorus (P) atom?    

Which of the following are the monomers of proteins?

The image below contains two water molecules. Explain why the bond labeled “D” forms. Be specific.  

Magnesium chloride (MgCl2) is a salt that dissolves in water. To which atom of a water molecule will Cl be attracted to? Explain your answer. Be specific. Use the images provided to help you answer the question.