Was A tree was 14 3/8 inches tall when it was first planted. Two years later, the tree
21 1/8 inches tail. How much did the tree grow in the two years?

What is the simplified form of 7 √x • 7 √x • 7 √x • 7 √x?

Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?