You can divide 36 by 12. 12 goes into 36 3 times. Take each ingredient and add 3 times that ingredient to your mixture. Imagine the circles below are cookies:
O O O O ...

You can use the annuity formula:
A= ...

Please rewrite the problem the way it is written on your homework. Thanks.

I think this is possibly a substitution problem. Is it written like this:
3(-k-4)+6
k=7?
If so, substitute k for 7:
3(-7-4)+6
You solve by first by working inside of the parenthesis:
-7-4=-11
Next, do the multiplication:
3(-11)=-33
Addition is l...

First multiply each term in the first parenthesis by
only the first term in the second parenthesis.
6x2 * 5x = 30x3
-4x * 5x = -20x2
11 * 5x = 55x
Next multiply each term in the first parenthesis by
only the second term in the second parenthesis.
6x2 * -8 = -48x2
-4x...

By adding them.
2x+90+13+23=180
2x+126=180
2x+126 = 180
-126 -126
2x=54
2x/2 = 54/2
x=27

Katie gave the last of her Halloween candy to the trick or treaters. She went up stairs to brush her teeth and then she heard something. Footsteps slow and heavy were progressing up the stairs. They almost sounded inhuman, zombie like.

This can be treated as a ratio problem. From 3:15 to 3:20 is 5 minutes. Scott printed 12 pages in 5 minutes. That is 12 to 5. You want to know how long it will take Scott to print 15 pages at this rate. Equal the 12 to 5 ratio to 15 to “unknown time” or
“t” .
12/5=15/t
Multiply both sides...