Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x? 1 plus-or-minus StartRoot 21 EndRoot i Negative 1 plus-or-minus StartRoot 19 EndRoot i 1 plus-or-minus 2 StartRoot 19 EndRoot i 1 plus-or-minus StartRoot 19 EndRoot

What is the pattern in the values as the exponents increase?

The height of a birch tree, f(x), in inches, after x months is shown in the graph below. how much does the birch tree grow per month, and what will be the height of the birch tree after 10 months? a. the birch tree grows 1 inch per month. the height of the birch tree will be 16 inches after 10 months. b. the birch tree grows 2 inches per month. the height of the birch tree will be 26 inches after 10 months. c. the birch tree grows 3 inches per month. the height of the birch tree will be 36 inches after 10 months. d. the birch tree grows 2 inches per month. the height of the birch tree will be 24 inches after 10 months.

How are algebraic expressions evaluated using substitution?