Simplify -3x + 7y + 21y - 12x
O 9x + 28y
0 -9x + 28y
0 4x - sy
0 -15x + 28y

D. -15x + 28y

Step-by-step explanation:

- 3x + 7y + 21y - 12x

Move the equation

- 3x - 12x + 7y + 21y

Combine - 3x and - 12x

- 15x + 7y + 21y

Combine 7y and 21y

-15x + 28y

Because you cannot simplify this equation any further, that is your answer

I hope that this helps! :)

i think it might be a but you might want a second opinion

answer:

step-by-step explanation:

here, the total dishes = 10

dishes having meat = 3 ( chicken, meatloaf and hamburger )

thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

=

therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

=

=

=

⇒ option b is correct.