Hello, I'm new to homeschooling and I have a question. Do teachers approve of this answer??? I don't know what happens when I submit this. Thanks!

see explanation

Step-by-step explanation:

product means multiply

Given

(2x - 4)(5x² - 2x + 6)

Each term in the second factor is multiplied by each term in the first factor, that is

2x(5x² - 2x + 6) - 4(5x² - 2x + 6) ← distribute both parenthesis

= 10x³ - 4x² + 12x - 20x² + 8x - 24 ← collect like terms

= 10x³ - 24x² + 20x - 24

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb