I am a one digit number. Follow the calculation steps and Find me. Step 1) Multiply me by 12 then add 6.
Step 2)Multiply the answer by 3 .
Step 3)Subtract 9 from the above product.
Step 4) Divide the answer got by 3 .
The result is 99. Who am I ?

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

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3

0.50 , 0.75

step-by-step explanation:

- (2, -7)

- lines r and s and lines t and u must be parallel