How do you write the inequality -
"sixteen is less than a number"

16<a number

Step-by-step explanation:

This is the less than symbol:    <

16 is less than ( < ) a number

Lets put "a number" as x

16<x

16 < n

Step-by-step explanation:

< - Less than. They way I remember is that the symbol is like an L.

n - Stands for number. You can use any letter I just chose that one.

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

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x