Express the average age of three sisters in the terms of the age a of the firstborn (in years) if the second was born 4 years after the first and the third was born 6 years after the second.

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30

Which of the following can be used to explain a statement in a geometric proof?

Factor the polynomial by its greatest common monomial factor.