How is 0! (zero factorial) equal to 1 (mathematical proof)?

What it means is that you first start writing the whole number n then count down until you reach the whole number 1. For the equation to be true, you must force the value of zero factorial to equal 1, and no other. ...

Step-by-step explanation:

Because while doing n!, you first start writting the number n then count down until you reach the writting 1

That's why, even if its 0! you still write the number 1.

the answer is the option b

the range is all real numbers

step-by-step explanation:

we know that

the absolute value parent function is equal to

see the attached figure to better understand the problem

so

a. it is v-shaped > is true

b. the range is all real numbers > is not true

because the range is the > [0,∞)

all real numbers greater than or equal to zero

c. it goes through the origin > is true

d. the domain is all real numbers > is true

step-by-step explanation:

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3