Walter is making a sculpture out of clay. For part of his sculpture, he uses a cone-shaped mold with a height of 10 millimeters and a radius of 9 millimeters. What is the volume of the cone? Use ​≈3.14 and round your answer to the nearest whole number.
cubic millimeters
For another part of his sculpture, he uses a spherical mold with a radius of 6.2 millimeters. What is the volume of the sphere?
Use ​≈3.14 and round your answer to the nearest whole number.
cubic millimeters
Walter bought 2,000 cubic millimeters of clay for his sculpture. Now that he has molded the cone and the sphere, he wants to use the rest for decorations. How much clay does he have left for decorations?
cubic millimeters

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.

What is the quadric regression equation that fits these data

Find the difference (8ab+a+2) - (3ab+6)